I just love the madness of how many 'clues' there are to Paul's death.
I have a book on it ("The Walrus was Paul", I think) and my favourite has to be that if you hold a mirror horizontally across the drum kit on the cover Sgt Pepper, the half you see and the reflection really look like it says "HE DEAD" with a diamond/arrow shape in between the two words pointing up to Paul.