Flicking around the Roku channels and I was able to start watching these from the pilot episode. This has to be one of the best sitcoms ever on television. The chemistry with all of the actors is definitely off the hook. Now that we know the actors it's a bit hard to imagine anyone else playing any of them. The bond between Zack and Turk is on par with Richie and Fonzie. And the janitor character really adds to the comedy, can't imagine the janitor not being in the series. Highly recommended