In 2001, Sean Penn starred in a movie titled I Am Sam.

How does this relate to Supernatural? It's the same message Sam tries to impart on Dean this Friday, as the latter has difficulty understanding just who his soul-less brother has become, especially now that the pair is doing work for Crowley.

Below, we've posted an early look at "All Dogs Go to Heaven." In the sneak peek, Sam attempts to prove that he hasn't really changed. Case in point: he still thinks about a certain girl...

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.