The Simpsons
The only main title in television built to be different every week: the chalkboard, the saxophone solo and the couch gag all change, so the sequence is a format rather than a film.
Seasons 1–20
90sThe original standard-definition opening, used for two decades.
Season 21
90sRebuilt in high definition and widescreen — new artwork throughout, and Springfield gains detail the old frame had no room for.