World of Warcraft
I don't know what it is about this game that is so incredibly addicting! Thankfully, it hasn't totally consumed my life...yet.
In my imagination, Heaven, or whatever you call your afterlife would be a giant video game where you could interact with everything and anything but could at any time, revert to your last "saved-point" and try something new.
Hell, on the other hand, would probably involve sitting at Heaven's "login-screen" but you'd forever be unable to remember your password.
-KRM