Supernatural is such a good show! I have literally been watching it all weekend on Netflix, which might I add is the best thing created since Television itself! Dean and Sam are amazing and honestly I hope this show never ends! I'm only on Season 3 so i have a Long way to go! However I did hear that they hope the show goes for like 19 seasons or at least 12! So basically if you haven't watched it I advise you do!