Dean got into an accident/fight/trouble that sends him into a coma. He meets Tessa again because he is near-death, and has a really fucked-up dream about why Heaven saved him; torturing of Alistair, I mean what else is he good for?

So, I'm going with the Dynasty gimmick.

In other news, I may love my TV more than any other piece of hardware on Earth. I have managed to hook up the laptop to the TV, and it looks AMAZING. Tonight there will be a viewing of the new Sarah Connor Chronicles episode as well as some form of anime.