Well I'd hope it was either one of two things: First, a heaven-type place. Not the religious type of heaven, but just one where you can reunite with friends and family (and maybe even pets) who have passed on. Second would be a re-incarnation of some sort. I like to believe in the karma system where, if I do good in this life, then my next life (if there is one) I'll be put into a good life. If I do bad, I'll be forced into a bad life.

I'd go with either one ideally. Truthfully though, I think there's nothing. When you die, I think it all just ends. You just, well, die. That's what I'm pretty sure happens. I guess it's just the human in me that makes me hope for one of the first two options.