An American actor and comedian, he was celebrated for his improvisational skills and genial, deadpan humor. Rising to fame with his work in sketch comedy, he became a beloved figure through roles in mockumentaries by director Christopher Guest, including "Best in Show" and "A Mighty Wind." His career spanned television and film, with prominent roles in "Everybody Loves Raymond," "Modern Family," and various guest appearances. His unique comedic style left a lasting impact on audiences and peers alike.