The Producers’ First Choice
Katey Sagal was a talented actress and had been in the Hollywood scene already before auditioning for the role of Peggy Bundy. It has been reported that even though Katey Sagal ended up getting the part, she wasn’t the producers’ first choice.
Earning The Part
Apparently the role of Peggy Bundy was intended for television producer and big-time comedian Roseanne Barr, but Sagal’s audition blew the casting directors away to such a degree that they couldn’t imagine anyone playing the role of Peggy better than her.