Friends til the End
Ah, Friends - the sitcom by which every production team bases the equation for a successful run any more. Based on the lives of six young friends in Manhattan over 10 seasons, the show takes credit for being the first true "ensemble" show - meaning no one character carried more screen time, story time, or became any more pivotal to the show than others.
Fun Facts: In the third season, the cast opted for collective negotiations, where the actors were given the salary of the least-paid cast member, resulting in salary reductions for both Jennifer Aniston and David Schwimmer. Writers did not originally intend for Joey's character to be "dim", but Matt LeBlanc put this spin on the role during his audition, and it stuck. The show was never shot on site in New Yorlk.