[4] Overton made his first onscreen appearance performing his standup act in 1981's HBO Presents The 6th Annual Young Comedians.

In 1987, he wrote an episode of The New Adventures of Beans Baxter while also appearing in various films and television shows including Willow, Amazing Stories and Million Dollar Mystery.

Later that year, Overton appeared in two episodes of Seinfeld and landed a small role in Mrs. Doubtfire.

In 2005, Overton appeared on Alias and Joan of Arcadia; in the latter he played God explaining to the title character the meaning of real wealth.

Overton appeared in a General Electric commercial as the father who wants his son to have his grandfather's hammer.