September 14, 1978 –
The TV show that helped launch Robin Williams career, Mork & Mindy, premiered on this date.
Many of the gags seen on the show were on-the-spot improvisations by Robin Williams, and later by Williams and Jonathan Winters. The improvisations proved to be so effective and popular that the series’ writers soon included specific sections in the scripts where Williams was allowed to perform freely, marked as “Robin goes off here.” If you pay attention to Pam Dawber, you can often see her having difficulty not laughing at the ad-libs.
The Haus of Dcaligari 