SpoilerTV posted the up-coming episode titles of Supernatural.
5.09 - The Real Ghostbusters
5.10 - Abandon All Hope
5.11 - Sam, Interrupted
5.12 - Being Sam Winchester
5.13 - Back to the Future II
5.14 - Dead Men Don't Wear Plaid
I know I can't wait for Abandon All Hope. Back to the Future II looks very interesting, could this be another back to the future episode?