Kryten introduces the 4000 series mechanoid, albeit played by another actor with a terribly irritating tendency to whine. Still, watching the Boyz from the Dwarf gussy themselves up for their big dates is laugh out loud hysterical.
Better Than Life is wickedly funny, and extremely disturbing considering the level of computer gaming the future may hold for us. The crew find a virtual reality game where all their fantasies come true (much like Star Trek's holodeck). The problem is, they're playing this game with Rimmer...
Thanks for the Memory is one of my favorites. Rimmer gets plastered on his death day. The next morning, Lister and the Cat have broken legs, there's remnants of an alien encounter, and who the heck is Lisa Yates? Too bad they've all lost their memories.
Please, watch Red Dwarf! It's fantastic!