I'm behind the Supernatural game all the way!
You could even have something like the sea shanties in Black Flag where instead of songs, you go looking for classic rock albums (on tape, of course) as Dean.
Maybe have one or two unique ones in each town you visit.
It'd be a *really* nice touch for a developer to really do their homework and match up towns for 'monster of the week' style missions with music that played in the episode where particularly towns featured.
I'm also really hoping it's not a shooter, cos, really, Supernatural's just got so much potential as a third person adventure games.
I'm with Kyle, make Arkham City style mysteries for the guys to follow!
Shit, I would have so much fun in this game
It would be *very* important to get some of the cast members on board, though. The show's got a very loyal (and vocal fanbase) so you're only going to increase your chances of success at aiming it at them at least as much as at non-fan gamers.
Weapons collecting and upgrading is a big, big thing for me, so naturally I've all kinds of fun with the Assassin's Creed games.
I'd be tempted to get Ubisoft to have a look at it, if they promise not to fuck it up with DRM
Or, maybe CD Projekt RED after they've got some time after the Witcher series.
Any developers looking at this thread: no stealing my ideas without at least buying me dinner.