I'm looking for a story that is a Supernatural crossover with Buffy the Vampire Slayer. The part I remember takes place right after the car accident that ends S1. Xander helps protect the family while in the hospital. He makes a wish to Halfrek (sp) to heal Dean, thus John never finishes his deal or dies. They later discover Xander is Sam and Dean's brother. I think Bobby shows up in the story too. I can't remember if the story is finished.

I'd also happily accept any recommendations for SPN - Buffy crossovers that focus on Xander, Dean and Sam.