Your welcome. I think I saw that when it was still on betamax, not even vhs, hehehe.
Don't know if this fits the category, but Night of the Comet was one movie I really enjoyed. It's in the horror part of this dead-donkey site, though, but it was pretty cool, with Catherine Mary Stuart (yum), and the guy who later plays Chakotai in Star Trek Voyager, hehehe. Don't think of it much as a horror, but more like Omega Man.
Speaking of Omega Man, you might want to consider The Last Man on Earth, starring Vincent Price. It is what Omega Man was a remake of, and is based on the book I, Legend. Pretty cool, I didn't even know there was such a movie. You can download it for free at emol.org.