Folks who watched last night’s Family Guy were treated to cameo appearances by Stan Smith of American Dad and Hank Hill of King of the Hill. Furthermore, the show’s opening credits mimicked those of Hill. Entertainment Weekly goes behind the scenes of these guest appearances, talking to Family Guy executive producer Steve Callaghan. Previously, Smith cameoed in the Family Guy episodes “Lois Kills Stewie” and “Excellence in Broadcasting”, while Hill popped up in “Petergeist”.