Over the past two years, Jimmy Fallon has done some rather stunning impressions of rock legends Neil Young and Bob Dylan performing some of the most ridiculous and unlikely songs from pop culture. On last night's episode of Late Night, the host added a new rock icon to the mix by performing the theme to Reading Rainbow as Doors frontman Jim Morrison. Fallon's Morrison is pitch-perfect, nailing the late singer's louche mannerisms and stoned croon to amp up the absurdity of the tune.