Perhaps Barr's most notable work was on Will & Grace, the long-running situation comedy about a gay man and his best friend, which first aired in the US from 1998 to 2006.
Barr wrote 18 episodes of the sitcom and had a hand in the production of 70 (variously as Consulting Producer, Supervising Producer or Co-Executive Producer).[1]
Barr also guest-starred once in the show: he played the role of Guy in 'Last Of The Really Odd Lovers', episode 23 of season three.
Barr also wrote and directed a short film, Mackenheim, which was produced by Billy Pollina in 2002.
Most recently, he was involved in the writing of a screenplay for the American adaptation of the Icelandic comedy series Næturvaktin ("The Night Shift").[2]
He now lives in California with wife and daughter. He graduated from Harvard College.[3]