Don't recall that . . . but do you remember this show . . .img src = http://www.cylon.org/images/tv/57-4015[1].jpg
Very well. "It's about time, it's about space, it's about time I slapped your face..." that was the prank parody of the theme song. I think it had a single full season, and part of a second, but that was a while back, and I was pretty young then. The astronauts finally figured out how to reverse their trip, by relaunching their capsule (despite lacking a booster rocket!), spinning it just so, and returning to the 1960s, complete with two cave-stowaways. The merry hijinks of having to hide these two cave people turned out to be of no interest to the viewing public.