The first five episodes originally aired on CBS, but didn't fare well in the ratings, and was cancelled. Five months later, UPN aired the show after where CBS left off, by replaying most of the episodes, then airing the final four episodes, that CBS decided not to air.
Both Tim Matheson and Bruce McGill were also in Animal House (1978).
This is not the only time Graham Greene starred in a role with werewolves. He was also in Twilight Saga New Moon (2009)
Mia Kirschner and Paul Wesley starred in The Vampire Diaries (2009) together. Wesley was a main character. In the series it was also about werewolves.