Since I watch mostly classic tv shows a lot of what I consider to be 'best' may differ from others. In no particular order: The Love Boat Happy Days Laverne and Shirley Brady Bunch Partridge Family and many more
the Brady Bunch, Bewitched, & I Love Lucy come to mind. The one from Three's Company used to bug me because I still can't figure out the lyrics... Oh, & the Flintstones, and the Jetsons! and ...