In light of the anniversary of Big John's passing, this bit of lunacy was brought to my attention.
The Lennon Prophecy, A New Examination Of The Death Clues Of The Beatles basically a relook at all the "Paul is Dead" Beatles clues only this time around, they're directed at John and the idea that he sold his soul to the Devil in exchange for fame and fortune....
Sure it's a giant stretch and a totally insane idea (or an incredibly cynical one to scam Beatles fanatics, take your pick). I've always found the whole Beatles clues thing to be somewhat fascinating though. Funny some of the "clues" he's come up with on this site to try to prove his theory.
http://thelennonprophecy.com/clues_gallery.html