Yep, and let us not forget "The Schwartz!" from Space Balls.

You are right about the E2 series's, the second one was the one that had Clancy Brown and others on another planet. The first one had a space station but was a spin off from thepost nuclear holocaust movie with the same name that had Marietta Hartley as an attractive female mutant that wanted a man who had been in statis to help reactivate equipment that would let the mutants use the remaining nuclear missiles to wipe out the nearby human underground base. They were a slave keeping race that dressed in a rather colorful greco/roman style and used rods called Stims to torture people into submission.

The TV series used some of the old props and sets but was a lot lower budget and didn't last long. In both really deep tubes formed a high speed underground bullet train system that lead to places all over the globe.