It Might Get Loud is one of the best movies I've seen in a couple of years. Thanks to Taylor for referring it.
The movie features Jimmy Page of Led Zeppelin, The Edge of U2 and Jack White of the White Stripes, all talking about their music and playing guitar. It's pretty awesome. There is one scene where Jimmy Page picks up a guitar and starts playing the rift for A Whole Lotta Love and The Edge and Jack White just sit there with there mouths wide open in aw. Pretty awesome movie.