Is the original Battle Star Galactica the only pilot to be made into a feature motion picture? I would say that is one of the "greatest ever pilot episodes".
Cheers is up there.
Miami Vice and Hill Street Blues are good mentions... NBC really blasted the other alphabets during the 80's with their iconic content... I would say HBO is the closest thing today.
I don't know about Mash though... throwing a party and raffling off Lt. Dish to fund raise money for the korean house boy to go to school in America... is that 1972 ground breaking stuff???
It's also funny to think how Mash would be perceived today if the black guy, Spearchucker, would have become a main character. Would the pc police killed the show despite its anti-war liberal bend?