Hill Street Blues and Miami Vice far surpassed the cop shows of the previous decade (the former introducing that annoying documentary shaky-cam, and the latter embracing music video aesthetics).
Then David Lynch raised the TV bar (both creatively and production wise) with Twin Peaks, followed by such innovative TV epics as The Sopranos, Lost, and Game of Thrones
Sitcoms didn't evolve so extensively, though after the BBC's The Office, many now also use documentary shaky-cams.