Clueless was originally conceived as a TV show, but made into a movie first (Clueless (1995)).
The character of Coach Graham Bullock, played by Bill Kirchenbauer is actually an homage to television series "Growing Pains" (1985) and "Just the Ten of Us" (1988) as in both of those shows the same actor played Coach Graham Lubbock. Same named character but with the L and the B switched in the last name.