The end is officially nigh for AMC's Preacher, the hyper-violent slice of carnage and Catholicism created by Seth Rogen and Evan Golberg, based on the Vertigo comic book series from writer Garth Ennis and artist Steve Dillon. Rogen announced the series would return for season 4 on August 4th, but also that the next go-around would be Preacher's last. The series stars Dominic Cooper as Jesse Custer, a small-town holy man who becomes possessed by the angel-demon offspring, Genesis. Together with his vampire buddy Cassidy (Joe Gilgun) and ex-criminal/girlfriend Tulip O'Hare (…