Tonight is the 2 hour season finale of Grey’s Anatomy and tonight we will hopefully find out if this is BFFs Katherine Heigl and TR Knight last episode. While I am rooting to say goodbye to both of them, I think tonight is going to make me cry over at least one of their departures. And after Lost’s finale last night, my theory is that they are going to end the episode with Izzie flat lining and we will have to wait until September to find out she lost her memory. Basically ABC will cancel Samantha Who? to make way for Izzie Who?