It is chiefly notable as having featured a Mork & Mindy crossover, and for the debate surrounding its status as a spin-off of Happy Days.
The series stars Jimmy Brogan as Random, an angel-in-training who is assigned to live with (and act as guardian angel for) a suburban Chicago family (led by a single mom played by Dixie Carter), as well as work as a high school teacher.
The series debuted on September 9, 1979, but it received poor ratings against 60 Minutes on CBS (the #1 show on TV that year) and Disney on NBC.
Television observer and owner of Sitcoms Online, Todd Fuller, maintains that because "Chachi Sells His Soul" aired on September 18, 1979, Random's appearance on this Happy Days episode was a crossover.
"[1] Thom Holbrook, who has a website devoted to TV crossovers and spin-offs, sees the arguments against calling it a spin-off, but ultimately concludes: "Making it a crossover would be basing things all on an odd bit of scheduling decades ago.