'Supernatural' Boss: Felicia Day, Ty Olsson and 'Maybe' Liane Balaban Returning on Season 8

Supernatural has built a series eight seasons strong around two main characters, and that is how Executive Producer Bob Singer likes it. "They're traditional loners, and we wanted to keep it that way... Part of the appeal is they're these 'Last Men Standing,'" Singer said of Sam and Dean Winchester (Jared Padalecki and Jensen Ackles) during...