As a part of the upcoming Muppet movie soundtrack, the Muppet Barbershop Quartet will do a version of “Smells Like Teen Spirit”, as well as Cee Lo Green’s “Forget You”.  To further the crossover, Dave Grohl will be making a cameo in the movie, as Animal’s replacement during anger management classes.  This literally might be the greatest movie in history.

Tags: Dave Grohl, Foo Fighters, Muppets, Nirvana, Smells Like Teen Spirit