Michael O'Neill is an American actor. He is probably best known for his role as Special Agent Ron Butterfield, the head of President Josiah Bartlet's Secret Service detail, on "The West Wing". He was also Richard Walsh in the first 2 episodes of 24. O'Neill graduated from Auburn University Wikipedia
The definitive Wikipedia entry for Michael O'Neill. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Michael_O%27Neill_%28actor%29