Television Without Pity listed 10 current shows that would be great on the big screen:
2. Supernatural
It is amazing the cool and twisted horror and ghost tales that this show manages to tell on a weekly basis with a TV budget. Given a two-hour time slot and movie money, this could be better than so many of the ridiculous horror movies that constantly flood the theaters. And we'd never complain about seeing Jensen Ackles and Jared Padalecki larger than life size.
Source: Television Without Pity.