Atsym Sknyfs
Superstar
just rewatched the pilot...TGiF invented the shared universe
family matters was a spinoff from perfect strangers
Steve urkel (family matters) made cameos in full house & step by step
Michelle (full house) and Alan Thicke (growing pains) made cameos on Mr Cooper
and Mark Linn Baker (perfect strangers) directed the last season of Mr Cooper
tgif didnt invent it...
we had happy days / mork and mindy / laverne and Shirley
archie bunker / jefferson
different strokes / facts of life