美国老爸第四季American Dad! is an American animated sitcom created by Seth MacFarlane, Mike Barker and Matt Weitzman for the Fox Broadcasting Company. The series centers on the Smiths, a dysfunctional family consisting of parents Stan and Francine and their children, budding adolescent Steve and new-age hippie Hayley. Other main characters include Hayley's stoner husband Jeff Fischer; the fa...