In its fourth season, King of the Hill is really cooking with propane, I'll tell you what, as Peggy rebounds from her skydiving accident to win her third Substitute Teacher of the Year Award, pathetic Bill Dautereive reclaims his high school football record, and clueless Dale's wife Nancy ends her decades-long affair with John Redcorn. The guest voices this season are particularly impressive: Meryl Streep , Reese Witherspoon, Drew Carey, Don Meredith, Kathleen Turner, Heather Locklear, and, in "Peggy's Fan Fair," a stellar roster of country artists, including Vince Gil, Clint Black, Randy Travis, and, um, Tony Danza. --Donald Liebenson