Imitating Christian Bale's ridiculous Batman voice is never-ending hilarity, but somehow I never thought that anything could beat Sheldon's imitation from episode 1 season 2 of The Big Bang Theory (stick to the end of the clip):
And then that little sitcom that brings joy to my life every week, Community, tops it when Abed, dressed as Batman, saves Jeff and Pierce from a falling fort of chairs. And then when Troy sounds tries the voice:
Never. Ending. Hilarity.