The Infomercial Kings are happy to select in the Pre 80's category, Threes Company.
This one of my favorite shows as a kid, my family loved watching it and so did I. Everything from Jack being a bumbling idiot to Chrissy being a hot airhead (She was probably my first crush)
Jack is studying to be a chef at a technical college and happens across Janet, a florist, and Chrissy, a secretary, in need of a new roommate. Due to Stanley Roper's intolerence for co-ed living situations, even in a multi-bedroom apartment, Janet tells him that Jack is gay. Helen Roper figures out Jack's true sexuality in the second episode, and does not tell her husband, her bond with the three roommates grows until the Roper's departure, and she often sides with them over her husband.
The show was set minutes from the beach in Santa Monica, California, and focused on three sets until the later seasons: the trio's apartment, their landlord's apartment and the neighborhood pub, The Regal Beagle. In later seasons more sets were used, regularly seeing Angelenos restaurant, and later Jack's Bistro, and the hospital where Terri works.
I would post youtubes but I am at work can cannot get to the site.