The Sliders got home

Wade, Rembrandt, and Arturo (who wouldn't be replaced by a double for another 7 episodes) may have gotten back to Earth Prime, but Quinn was retconned as from Kromagg Prime in the 4th season and would have been unable to get home even with the help of the Sorcerer as Quinn's parents had shielded his home dimension in a slidecage.

I remember that show being nearly unwatchable.

I did see the first few seasons, but then again I was alone in a new city, living in a shitty basement apartment. I had nothing better to do or watch. No internet. No cable. Couldn't even stare out the window. Nearest friends were an hour's drive away. It was television of desperation.