Having lasted beyond its planned end point in Season 5... 1 / 8
... Supernatural broke new ground in Season 6 by smashing through the fourth wall. 2 / 8
Something hinted at previously with Chuck Shurley's "Supernatural" books. 3 / 8
In "The French Mistake," Sam and Dean are sent to an alternate reality... 4 / 8
... Where their doppelgangers, Jared Padalecki and Jensen Ackles, live. 5 / 8
They land in the middle of the Supernatural TV show... 6 / 8
... Which is packed with self-referential gags. 7 / 8
The episode expanded the show's story possibilities wider than ever before. 8 / 8