SyFy's 'Dominion': Survivng the post-apocalypse with some low-rent angels

"Dominion," premiering Thursday night, is strictly cheapo-apocalypto, but it's one of the more interesting efforts from the SyFy network lately, which, despite its hopeful marketing slogan ("Imagine Greater"), keeps churning out shows that are resiliently mediocre -- beyond even the B-movie heritage of its namesake genre.