So, my favourite one so far....
Is that Sam will be unsure what reality he is in! OH MAN! It's a little like my Sam Is... story and a little like ratherastory 's Fusion'verse (which I adore)...and and...SAM whump! I'm a sucker for it!
(which is something I've really only realized about myself recently...for all my falling in love with the show because I fell in love with Dean, I think if there were a gun to my head, I might have to declare myself a Samgirl...though, I should point out that Dean loves Sam too!)
Anyway! SUPER EXCITING.