All you need is Jaws

Look around you now, and there are 'classic' acts putting aside their differences and touring again. Pink Floyd will be at Live8, Abba reformed for a friend's wedding, Duran Duran got back together for... well, we're not really sure what Duran Duran got back together for.
But the Beatles, bless them, only seriously considered reforming once - and it wasn't for money, it wasn't for 'the fans' (money again), it wasn't even for 'the music' (translation: the money).
No, according to Ringo Starr the occasion was a one-off TV show. And why did the Beatles consider it?
"Because,", says Starr, "we were on after the guy who fights the shark."
That, right there, is sheer class.