h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

I saw part of 'First Men on The Moon' on a little black and white tv in someone's kitchen a few years ago. I went to visit a friend, and he had... it must have been The Sci-fi channel on. As we were talking, and drinking or , it occurred to me that I thought I recognised the voices coming from that small, 3" wide screen. There were many other Star Trek actors in the production, even Shatner himself I think (who played the baddie leader of the Moon people ). I think Neelix might have been in it too, or perhaps it was Quark. Either way, it was a Star Trek character who always appears with heavy make-up.