Bionic Woman is undergoing a little surgery. Mae Whitman ( Thief) is being replaced in the role of Becca, the title character's deaf sister. An NBC spokesperson confirmed the move, adding, "The decision was purely creatively driven. It is very common to change story lines, characters, actors after the initial pilot is shot." The search for a replacement is under way - and the new actress might not be required to learn sign language. Rumor has it that someone high up requested that the character's hearing be restored. It's a miracle!