primetime schedule

i might not be right, but i remember teens doing stuff before and after the commercial breaks during alf and whatever else was before or after.  or was it just for halloween, probably '89?  i know i remember a halloween where teens were doing stuff during the commercial breaks, and someone played toccata and fugue.  i never really watched alf much, so i'm not sure what it was.  does any of that ring a bell?  68.251.175.61