"As we eagerly await Hulu’s revival of King of the Hill, longtime fans of the animated sitcom about a small-town Texas family can revisit the first moments in Hill history. Hank, Peggy, Bobby, Luanne and their neighbors made their on-screen debut for Fox executives in a pencil test that led to 13 glorious seasons and counting, and the original pitch trailer developed by Heart of Texas Productions in 1996 is still available for viewing online. The two-minute teaser is somehow both a nostalgia bomb and a perfect representation of who the Hills continue to be almost three decades later."
See:
https://www.cracked.com/article_37149_the-king-of-the-hill-pitch-trailer-is-a-perfect-time-capsule.html