For those of you heathen sci-fi geeks out there, I've got an old gem for you here. From all the way back during the Tom Baker years of Doctor Who, here is "The Face of Evil". This serial is far from bashful in its criticism of religion. If you've got some spare time and a flair for camp, this is a great one to check out. I particularly love Baker's sly banter with the Voodoo Priest character; you really can't miss it.
There are plenty of other old Doctor Who serials with similar themes (including a few written by Atheist legend Douglas Adams), and I briefly covered some choice episodes of the current reboot series in my previous post on the God of the Gaps. Anyway, enjoy this heathen jewel from across the Atlantic!
EDIT: Apparently the original proposed title of this serial was "The Day God Went Mad". How about that, huh?
Currently, this serial is sadly out of print. It was released on VHS back in 1999, but has never been converted to DVD. The episode is pretty much only available on the web. However, Classic DW serials have been making their way onto shelves lately, so there may still be hope of a future DVD release.