An American actor, comedian, writer, and producer, he is best known for his biting comedic style and distinctive voice. He gained initial fame with his stand-up comedy in the early 1990s, highlighted by the special "No Cure for Cancer." Transitioning to acting, he appeared in films like "The Ref" and "Rescue Me," a TV series he co-created, which earned critical acclaim. His work often explores themes of masculinity and societal critique, establishing him as a multifaceted entertainer.