Could the finale of 30 Rock perhaps be the best finale of all time? Too early to tell?
Legitimately funny, in keeping with the run of the show, poignant, referential, creative, innovative, comprehensive.
I've seen finales that do things epically or emotionally, but I can't recall one that did so many things so well without missing a beat.
Bill Parcells to Phil Simms: Son, it breaks my heart that my expectations for you exceed those you have for yourself.