"long-running"

2005 · 17 Seasons · FX / FXX · Comedy / Satire

It's Always Sunny in Philadelphia redefined what a sitcom could get away with and kept doing it for longer than any other live-action comedy in American television history. Its core cast of irredeemable narcissists turned taboo subject matter into a playground, and the best seasons deliver some of the sharpest, most fearless comedy ever aired. Later years introduced stretches where the formula felt strained and the edge dulled, but even in weaker runs, the show's willingness to go places no other comedy would touch keeps it relevant. Seventeen seasons in, The Gang still has more hits than misses, and that track record speaks for itself.

1989 · 37 Seasons · Fox · Animated Sitcom / Satire

The Simpsons produced what many consider the greatest run of comedic television ever made, with its first eight or nine seasons operating at a level of wit, heart, and cultural sharpness that changed the medium forever. Everything that came after has been a long, slow coast downhill, and that's both the show's tragedy and an unfair standard few programs could ever meet. Modern episodes aren't unwatchable, but they're a faint echo of what this show once was. The golden age alone earns its place among the all-time greats, and that body of work continues to influence every animated comedy that followed.