Tom Petty Tom Petty

Rocker Tom Petty is joining the voice cast of Fox's King of the Hill as Lucky, Luanne's new love interest, in this, the animated series' 10th season (premiering Sept. 18). Also slated to be heard this season: Johnny "Jackass" Knoxville as a mentor of Bobby's, OutKast's Big Boi as Peggy's new boss at the church, Smallville's John Schneider as a former softball champion and American Pie's Shannon Elizabeth as a harlot with a bosom heart of gold.