Creator Eric Kripke tweeted a copy of his 2004 pitch to The WB for Supernatural as it celebrates 300 episodes tonight. "Two brothers cruising the dusty back roads in their trusty 64 Mustang battling the things that go bump in the night," he wrote in his pitch. He described "Sam Harrison" as the Luke Skywalker series, while Dean was like Han Solo. Kripke also shared the pitches for the first five episodes of the then-WB series. ALSO: How Gilmore Girls almost cost Jared Padalecki his Supernatural role.