You'd be hard-pressed to find a more fearless series currently on air than the CW's 'Supernatural'. Over the past six seasons, the dashing Winchester brothers have faced everything from Santa Claus to a spoof of Dr. McDreamy, but this Friday, they're facing a genre that few shows (or movies) dare to touch these days: The Western.

'Supernatural' already smashed the fourth wall with great aplomb earlier this season, but pulling off a believable Western on a TV budget would be a feat for any show without a premium cable network footing the bill. So it gives us great pleasure to report that, not only is 'Frontierland' gorgeous to look at, it's also one of the series' strongest episodes to date, providing humor and action while keeping up the momentum of the mythology as we approach the season finale.

TV Squad was lucky enough to see an advanced screener of this Friday's wild Western episode, and we've managed to whittle down an hour of memorable moments into a list of six reasons why this episode is not to be missed. Proceed with caution, pilgrims: there are mild spoilers ahead.