Wyatt (Keith Carradine) is Penny's father. He comes to visit, and Penny feels compelled to involve Leonard in a ruse to make him think they are still together. When the ruse fails, Wyatt feigns anger at Leonard, but as soon as Penny is out of earshot he begs him to try to win her back. (Wyatt reveals that he favors the successful Leonard over Penny's other "loser" boyfriends.)