Grammer's well-known voice and mid-Atlantic accent make him popular for voiceover work. He has provided the voice of Sideshow Bob on The Simpsons, winning an Emmy Award for his work in the episode "The Italian Bob", his fifth Emmy win. He has appeared in eighteen episodes from the show's inception in 1989 through 2015's "Treehouse of Horror XXVI", in which his character finally succeeded in killing Bart Simpson in one segment ("Wanted: Dead, then Alive"). Grammer supplied the voices for "Stinky Pete the Prospector" in 1999 Disney/Pixar film Toy Story 2, Vladimir in the Fox animated movie Anastasia, Rothbart in Barbie of Swan Lake, Zozi the Bear in the subsequently produced sequel Bartok the Magnificent, the title character in the short-lived animated series Gary the Rat, and the villain, Dr. Ivan Krank, on Disney's Teacher's Pet. He provided the opening speech and piano in The Vandals' song "Phone Machine" from the album Fear of a Punk Planet, and sang a rewritten version of the "grinch" on an episode of Just Shoot Me!. He was the voice of the mad scientist monkey, Dr. Frankenollie, in the Mickey Mouse short Runaway Brain. He was also the narrator of Mickey Mouse – Once Upon a Christmas.