Mork & Mindy was a hilarious series that unleashed the comic talents of Robin Williams. This series began as a hilarious episode of Happy Days and ended with Mork getting his new assignment to go to the seventies. Mork even went back in another episode of Happy Days (a clip show but still funny). The series had a pretty good cast behind it, but it could have failed without Williams and his unique humor. It remains as one of Williams' best works.