Not sure if there's any other old farts like me who like listening to the Beatles old studio outtakes etc., but somebody at alt.binaries.sounds.mp3.beatles is posting some great tapes from the Sgt. Pepper album right now.
I've been listening to the early rehearsals of Strawberry Fields and it's really educational to hear how the songs take shape as they're being written.
Same thing with figuring out how some guitar parts played on the really early material like Help where they slow the tape down cause it's too fast for George Harrison to play the run.