[Tree of Liberty]

I think the SciFi channel only offers MST3K movies from season five and after

That's correct. There are some MST3K sets available on DVD, though. Santa Clause vs. The Martians isn't among them, but I'm crossing my fingers that it's out somewhere and I just haven't been looking in the right places.

[Skooz]

"Santa's laugh mocks the poor."

[ironwill]

The correct title is Santa Claus Conquers the Martians. It's available on DVD at Amazon for $8.

I remember watching this when I was a kid. Stupidest movie ever made but damn funny. A little tidbit here, Pia Zadora is the little girl in the movie. Her first film.