Keith Henson On July 19, 2000, Keith Henson was arrested by the Riverside County, California, Sheriff’s Office for making terrorist threats on the Internet against the Church of Scientology. On April 26, 2001, a jury found Henson guilty of having committed a hate crime under section 422.6 of the California Penal Code . Henson was scheduled to appear for sentencing on May 16, 2001, but failed to appear and the Judge was forced to issue a warrant for his arrest.

Mark Bunker is a television producer, former radio personality, actor, and as of 1997 a critic of the Church of Scientology. In 1999 he started Xenu TV and moved to Clearwater, Florida where he produced videos for the Lisa McPherson trust. On 1999-03-14 Scientologists picketed Mark's house in Los Angeles, California. In 1999, John Travolta refused to walk outside along the red carpet to the premiere of "The General's Daughter" because of Mark Bunker's presence, …

Paulette Marcia Cooper is an American author who is best known for activism against the Church of Scientology and the repercussions she suffered as a result.

David S. Touretzky is a research professor in the Computer Science Department and the Center for the Neural Basis of Cognition at Carnegie Mellon University. He received a BA in Computer Science at Rutgers University in 1978, and earned a Master's degree and a Ph.D. (1984) in Computer Science at Carnegie Mellon University. Touretzky has worked as an Internet activist in favor of freedom of speech, …

Gerry Armstrong is a former member of the Church of Scientology who is now one of the most active critics of the Church. In 1980, the Church assigned Armstrong, then a member of the Church's elite Sea Org, to organize some personal papers of L. Ron Hubbard that were to serve as the basis of a new biography of Hubbard. A non-Scientologist, Omar Garrison, had been hired to write the book.

Tory Christman (former married name Tory Bezazian; online name "Magoo"), born 1947, is a former member of the Church of Scientology. She left the organization in 2000, after being a member for about 30 years and is now one of its most visible and high-profile critics, making frequent media appearances.

Andreas Heldal-Lund (born on December 10, 1964 in Oslo) is the operator of Operation Clambake.

Jonathan Caven-Atack (born 5 June, 1955) known as Jon Atack, is a British artist, published author and widely recognized as one of the most outspoken critics of the Church of Scientology

John Sweeney is an award-winning journalist and author, currently working as an investigative journalist for the BBC's "Panorama" series.

Karin Spaink (born december 20, 1957 in Amsterdam) is a journalist, writer and feminist. Spaink is a free speech advocate and social critic. Some of her battles includes: * New-age writers who assert all diseases are only a psychological phenomenon; * The Church of Scientology, who sued her for more than ten years; * American pro-choice advocates who got a pro-life site banned because of texts that may be construed as a literal, …

(William) Grady Ward (born April 4, 1951) is an American software engineer, lexicographer, and Internet activist who has featured prominently in the Scientology versus the Internet controversy.<;br /> Prior to his opposition to Scientology practices, Grady Ward compiled the Moby Project, an extensive compilation of English language lexical resources and in 1996 released it to the public domain.

Stacy Brooks (born April 8, 1952) is one of the most public and outspoken critics of the Church of Scientology.<;sup></sup> Like her late ex-husband Robert Vaughn Young, a Scientology whistleblower employed by Scientology for over 20 years, Brooks was also a member of the Church, working in its upper level management in Los Angeles for almost fifteen years.<sup&gt;</sup> After leaving in 1989 Brooks joined the Lisa McPherson trust, …

Tilman Hausherr (born 1965) is a German citizen living in Berlin, Germany. Hausherr is well-known among critics of Scientology for his frequent Usenet posts and for maintaining a website critical of Scientology. Hausherr is also the author of a software utility, Xenu's Link Sleuth, which was praised in a 2002 "PC Magazine" article covering 70 web builder utilities.

Gabe Cazares (1920-2006) was the former mayor of Clearwater, Florida, a civil rights advocate, and a critic of the Church of Scientology. He died September 29, 2006 in Clearwater at the age of 86.

The American writer Arnaldo (Arnie) Pagliarini Lerma (b. November 18, 1950) is a former Scientologist, and critic of Scientology, who has appeared in television, media and radio interviews.

Ursula Caberta y Diaz (born 1950) is the Commissioner for the Scientology Task Force of the Hamburg Interior Authority. She graduated in political economy in 1950. Widely cited in the German press, she is regarded as an expert on sects and Scientology. Caberta is also an official in Hamburg's authority for interior affairs. The Hamburg Scientology Task Force was founded in 1992 to monitor the activities and publications of Scientology, …

Robert Vaughn Young (April 23, 1938 - June 15, 2003) commonly known by his initials RVY, was a whistleblower against the Church of Scientology after working high inside their organization for over twenty years.

Matthew Richard "Matt" Stone (born May 26, 1971) is an American animator, screenwriter, film director, voice actor and actor. Along with Trey Parker, he is one of the creators of the critically-acclaimed animated television series, "South Park".

Randolph Severn "Trey" Parker III (born October 19, 1969) is an American animator, screenwriter, film director, voice actor, actor and musician. He is most noted as one of the creators of the animated series "South Park" along with Matt Stone.

Zenon Panoussis (born 1956) is a naturalized citizen of Sweden who is known for his dispute with the Church of Scientology, as well as for his novel legal tactics. In late 1996, Zenon Panoussis appeared on the newsgroup "alt.religion.scientology". Although he was a new-comer to the larger online battle between Scientology and its critics he quickly came to the forefront.

Andre Tabayoyon is a former member of the Church of Scientology who is primarily known for an affidavit in which he describes the inner workings of the Church. Among other things, he states in his affidavit that he was formerly in charge of security at Church's Gold Base near Hemet, California. He gave testimony about the COS in a sworn affidavit introduced as evidence in the case "Church of Scientology International v. Fishman and Geertz".

Aylsworth Crawford Greene III (born December 21, 1952) is an American attorney from San Anselmo specializing in litigation against cults.

Frank Vincent Zappa (December 21, 1940 - December 4, 1993) was an American composer, guitarist, singer, film director, and satirist. In his more than 30-year long career, Frank Zappa established himself as one of the most prolific and distinctive musician-composer-band leaders of his era. Zappa worked in almost every musical genre and wrote music for rock bands, jazz ensembles, synthesisers and symphony orchestra, as well as radiophonic works constructed from pre-recorded, …

Leo Joseph Ryan, Jr. (May 5 1925-November 18 1978) was an American politician of the Democratic Party. He served as a U.S. Representative from the 11th Congressional District of California from 1973 until he was murdered in Guyana by members of the Peoples Temple shortly before the Jonestown Massacre. After the Watts Riots of 1965, then-Assemblyman Ryan took a job as a substitute school teacher to investigate and document conditions in the area.

Cyril Ronald Vosper (7 June, 1935 - 4 May, 2004) was a Scientologist and later a critic of Scientology. He wrote "The Mind Benders", which was the first book on Scientology to be written by an ex-member and the first critical book on Scientology to be published (narrowly beating "Inside Scientology" by Robert Kaufman).

The Rt. Hon. Kenneth Robinson (19 March 1911-16 February 1996) was a British Labour politician who served as Minister of Health in Harold Wilson's first government, from 1964 to 1968, when the position was merged into the new title of Secretary of State for Social Services.

Mark Ebner is an American investigative journalist who writes about controversial issues in the Los Angeles area, including pit bull fighting in South Central, Scientology, and celebrity scandal. In 2002 he co-authored "Ain't It Cool?: Hollywood's Redheaded Stepchild Speaks Out" with Harry Knowles. With Andrew Breitbart, he wrote the 2005 best-seller "Hollywood, Interrupted".

Tom Klemesrud (b. October 12, 1950)

Ned Arnel Mencía, better known by his stage name Carlos Mencia, is an American comedian, writer, and actor. He is currently the host of his own show on Comedy Central, "Mind of Mencia".

Louis Jolyon ("Jolly") West (1924 in Brooklyn, New York - January 2, 1999 in Los Angeles) was an American psychiatrist, human rights activist and expert on brainwashing, mind control, torture, substance abuse, post traumatic stress disorder and violence.

Kathy Griffin (born November 4 1960) is an Emmy-nominated American stand-up comedienne and actress. She has also been a voice actor and a red carpet commentator. Griffin is a self-proclaimed "D-list celebrity."

Sean Kennedy (born on October 23, 1973) is a Canadian writer, internet radio and TV personality. Kennedy has written two horror novels, starred in three video series and five long running radio series. Kennedy believes in the free dissemination of media and all of his works can be copied and given away for free under a Creative Commons License.

Lawrence Wollersheim is an ex-Scientologist. He brought a case against the Church of Scientology in 1980. In the course of this case, the story of Xenu came to public light. Wollersheim joined Scientology in 1969, signing the Sea Org's "billion-year" contract to serve the church. Wollersheim claimed to have been held captive in the hold of a ship docked off California for 18 hours a day, what he called a "thought reform gulag".

John Gordon Clark, M.D. (1926 - 1999) was a Harvard psychiatrist and authority in research on the damaging effects of cults. He was the target of harassment from Scientologists after he testified against them to the Vermont congress in 1976. His similarly harassed colleague Louis Jolyon West remarked: "I was lucky that I was a full-time professor in a big university like UCLA. Others, like Harvard's Jack Clark.

Jamie DeWolf (1979 -) is an American slam poet and spoken word comedian.

Dr Christopher Riche Evans (1931 - October 10, 1979) was a British psychologist and computer scientist. Evans entered the field of computer science after joining the National Physical Laboratory in the mid 1950s. In 1979, he wrote a book about the oncoming microcomputer revolution, "The Mighty Micro: The Impact of the Computer Revolution" (London: Victor Gollancz Ltd, ISBN 0-575-02708-8), which included predictions for the future up to the year 2000.

Maynard James Keenan (born April 17, 1964, as James Herbert Keenan) is an American rock singer. He has been a member of the band Tool since 1990 and was a member of the band A Perfect Circle from 1999 to 2005. He is currently touring with Tool, and pursuing his Puscifer side project and his vineyards.

William Seward Burroughs II, more commonly known as William S. Burroughs (pronounced), was an American novelist, essayist, social critic, painter and spoken word performer. Much of Burroughs' work is semi-autobiographical, drawn from his experiences as an opiate addict, a condition that marked the last fifty years of his life. A primary member of the Beat Generation, he was an avant-garde author who affected popular culture as well as literature.

Jeff Dandurand (Born February 13, 1974), more commonly known as Jeff Duran, is a Los Angeles based radio personality and comedian. Jeff Duran was born in Arcadia, CA and attended the same high school as Stevie Nicks and Michael Anthony of Van Halen. Duran was a child actor, appearing on The Wonder Years and in a video by heavy metal band Megadeth.

Maurice Davis (December 15, 1921 - December 16, 1993) was a Rabbi, and human rights activist. He was a past director of the American Family Foundation, now known as the International Cultic Studies Association. Davis was the rabbi of the Jewish Community Center of White Plains, New York. Davis was a regular contributor to "The Jewish Post and Opinion", where he had a column. Davis served on the President's Commission on Equal Opportunity, …