The Evolution of 'The Simpsons' Animation Over 30 Years

The series has come a long way from its humble beginnings as a segment on "The Tracey Ullman Show." On air for 32 years and counting, it's become the longest-running scripted series on prime time, the longest-running American animated series, and the longest-running American sitcom. And Homer, Marge, Lisa, Bart, and Maggie have evolved a lot over the course of three decades — whether you look at the style of their movement or the details of their character designs, all the way down to pupil size.