Denis Leary made his mark as a stand-up comedian in the 1990s. His shows censured all that he found wrong in politics, society and culture of America. From stage shows, he graduated to television shows and television commercials. His mannerism is brash and language disagreeable. His dialogue delivery is fast and is described as ranting. His shows are punctuated with songs that make us laugh and think. He has acted in several movies and found success, both, in comic and serious roles. He has won many nominations and awards for his acting and writing efforts on the small screen. A man with definite views, he has always been outspoken. His admiration for firefighters made him act promptly during the September 11, attacks in raising charity. Despite his success, he has been on the receiving end of brickbats. His views on autism were criticized and he had to apologize to parents of autistic children. Professionally, charges of plagiarism have been leveled against him. Many critics feel that his act has many similarities to those of his former friend and less successful fellow comedian Bill Hicks, an allegation that he rejects. He believes that a little controversy can help comedians get noticed.