I used to love that as a kid, but I haven't seen it in quite some time. I didn't know that Lovitz and Hartman did work on that! I guess Lovitz must have been the radio, huh? Who did Hartman voice?
Disney used to play this a lot. There have been a few sequels coming out lately. In one of them the go to the moon (what th--?). Probably not as good as the original, but I can't speak from my own experience.