Right after his television debut in the premiere, Robin Williams concurrently appeared on The Richard Pryor Show (1977), which had been taped earlier, and he guest-starred in his breakout role of Mork on Happy Days (1974) season five, episode twenty-two, "My Favorite Orkan" just a few weeks after the final "Laugh-In" special was broadcast.
Leftover and recycled footage of famous guest stars was often utilized in subsequent episodes.
Producer George Schlatter relaunched the series without creators and hosts Dan Rowan and Dick Martin, who later won a 4.6 million dollar lawsuit against Schlatter for continuing the show without their permission.
Although the production had recently wrapped, the producers had to buy out Robin Williams' contract so he could appear in his role as Mork on Happy Days (1974) and its quickly-produced spin-off, Mork & Mindy (1978).
This was a series of six hour-long specials which aired (primarily) on a monthly basis. If they had been more successful, NBC would have renewed the show for another season.