This was one of my favorite shows when I was in high school and college. I was really into sci-fi at the time (especially "The X-Files"), and I had a huge crush on Jerry O'Connell, so this series was right up my alley. The original premise was intriguing: a professor and his student discover a way to create wormholes into parallel universes, to which they would briefly visit before returning to their own earth. Unfortunately the device that allows them to do this gets damaged and they are stuck in a parallel world with no idea how to get home. So they keep "sliding" from one random world to the next, hoping to eventually return to "Earth Prime". Do they return? I have no idea, because after the first few seasons the show took a sharp turn for the worse and became almost unrecognizable. While most shows jump the shark at some point, this show jumped about 10 sharks early on. It's a shame because it was one of the few intelligent shows going at the time. If you are new to the series, I would rent the first two seasons, and maybe the third. Once John Rhys-Davies leaves (whose character was one of the backbones of the show), it's not worth watching anymore. My rating is for the first few seasons, not the anomaly it became after that. I guess one could say the show itself slid into a horrifying "parallel universe", never to return again.