Recurring Guest Characters Jessica Walter 1 guest appearances Mitchell Hurwitz 1 guest appearances Jake Gyllenhaal 1 guest appearances Robert De Niro 1 guest appearances Jennifer Lopez 1 guest appearances Christopher Walken 1 guest appearances Barbara Walters 1 guest appearances Dave Chappelle 1 guest appearances Jay Leno 1 guest appearances Conan O'Brien 1 guest appearances Spike Lee 1 guest appearances Tina Fey 1 guest appearances Hugh Jackman 1 guest appearances Jon Hamm 1 guest appearances January Jones 1 guest appearances Vincent Kartheiser 1 guest appearances Jared Harris 1 guest appearances Christina Hendricks 1 guest appearances John Slattery 1 guest appearances Kiernan Shipka 1 guest appearances ⇤ « 1 2 3 4 5 » ⇥