Supernatural is known for inventive, well-written, and brilliant episodes, and this list proves that even episodes that were technically 'filler' were some of the show's best. Particularly in the first five seasons of Supernatural , there was a very clear story arc involving Sam Winchester, Dean Winchester, Lucifer, and Michael.

Even after the season 5 finale—which was Supernatural's original ending —though, each season had a clearly defined narrative arc. Throughout the show's many seasons, there were always episodes that fell outside that core storyline, be they monster-of-the-week episodes or simply hilarious one-offs. Of all the filler episodes from Supernatural's 15 seasons, these 10 are the best overall .

The Real Ghostbusters

Chuck and Sam Winchester at the Supernatu

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