<P> Fonzie and Laverne of Laverne & Shirley appeared in the first episode of the show . In this segment, Mork relays to Mindy his trip to 1950s Milwaukee where Fonzie sets Mork up on a date with Laverne . </P> <P> Mork returned to Happy Days in the episode "Mork Returns" in which Mork tells Richie that he enjoys coming to the 1950s because life is simpler and more "humdrum" than in the 1970s . Fonzie sees Mork and immediately tries to run away, but Mork freezes him and makes him stay . He eventually lets him go, but not before Fonzie asks Mork to reveal two things about the future: "cars and girls". Mork's response is, "In 1979...both are faster ." The episode is mostly a retrospective in which clips are shown as Richie and Fonzie try to explain the concepts of love and friendship to Mork . </P> <P> Mork also appears in the first episode of Out of the Blue, "Random's Arrival", as a crossover stunt . </P> <P> Paramount Home Entertainment has released the entire series of Mork & Mindy on DVD in Region 1 in both individual season sets and a complete series configuration, while the first three seasons are available in Regions 2 and 4 . The Region 1 DVD release of season 1 was from Paramount alone; subsequent releases in Region 1, as well as international season 1 releases, have been in conjunction with CBS DVD . </P>

Was alf a spin off of mork and mindy