Since Supernatural is a rerun tonight (of Crossroad Blues), here's some info on upcoming tie-in products. Information gathered from several Supernatural communities on LJ, including supernatural_tv.
Season 2 of the show is now available through Amazon unbox.
The Season 1 Official Companion is also available for preorder.
At his blog, Keith R. A. DeCandido talks about writing Nevermore, a Supernatural tie-in novel, and the rockin' musical soundtrack he uses to get in the Supernatural writing mood. DeCandido did a remarkable job of capturing the voices of the Firefly crew in his novelization of Serenity--having him on this assignment can't be a bad thing. Nevermore is also available for preorder.
Jeff Marriotte, who has written several Buffy the Vampire Slayer and Angel tie-in novels, as well as several of the comic book tie-ins, is also writing a Supernatural tie-in novel, Witch's Canyon. Again, available for preorder.
Supernatural will return next Thursday with a new episode featuring Tricia Helfer (Battlestar Galactica).
Supernatural on iTunes.