Allen Kelsey Grammer (born February 21, 1955) is an American actor, most famous for his 20-year stint playing Dr. Frasier Crane on Cheers and Frasier (he used to hold the record for the longest duration of portraying a character on TV, tied with James Arness for Gunsmoke, not counting voice actors). One of the few, if not the only, actors to receive three different Emmy nominations for the same character on three different shows (Frasier, Cheers, Wings).
His second-most famous role is that of Sideshow Bob (Krusty's former sideshow partner who tried to frame Krusty for armed robbery, but now plots to murder Bart after Bart proved that Krusty is innocent) on The Simpsons.
Escaping the shadow of Frasier Crane has been pretty hard going (see Chuck Darling in the short-lived Back To You), but Grammer has proven his versatility in other genres, onstage and off. He has played Beast in X-Men: The Last Stand (plus a cameo in X-Men: Days of Future Past), Georges in La Cage aux folles (for which he was nominated for a Tony), and Anti-Frasier Tom Kane in Boss, which netted him a Golden Globe award in the drama category, adding to the many comedy awards he received for his role as Frasier. He also also starred in Down Periscope, Swing Vote and executive produced shows such as Girlfriends, The Game (2006) and Medium.
He has had numerous problems with alcohol, having started drinking at age nine (but his family life has been so tragic it's hard to blame himnote ). His daughter is Spencer Grammer. He also once flipped a Dodge Viper. Lest we forget that he was Gary the Rat, and appeared in both of Don Bluth's Anastasia adaptations.
Grammer is also a very talented singer, and frequently acts as The Cast Showoff on The Simpsons.