Not what you personally believe, but which would you think would be pretty neat?
Please note that you can't have Heaven without Hell, and I ask you to limit your responses to coherent theories (Oh, I think what happens on Charmed is pretty great! When you die, you become a ghost, or an angel if you've been good, but they still have reincarnation, and Hell and all that stuff, and if you happen to be Chinese a scary dude on a horse comes along to steal your soul).
Personally, I like the idea of Nirvana. Speaking of which, any Buddhists in the house?