Spent three years performing with the Yale Repertory Theatre
Assumed his hyphenated stage name early in his professional career after learning that the name Mark Baker was already registered at the actors' union
Made his breakthrough in screen acting in the 1982 comedic film My Favorite Year, starring opposite Peter O'Toole as a young writer who tries to keep O'Toole's character sober
Cofounded the New York Stage and Film Company in 1985
Known to TV fans as high-strung Larry in the 1986-93 sitcom hit Perfect Strangers
Helped adapt his father-in-law Arnold Lobel's Frog and Toad series of children's books into a Tony-nominated musical titled A Year With Frog and Toad; went on to play the role of Toad in the original Broadway production in 2003