Well, from Jessica Walter, who played the inimitable Lucille Bluth on Arrested Development. The actress has signed on to guest-star in at least one episode of CBS’s The Big Bang Theory. She’ll play “a rich donor whose grant to the university science department relies on Leonard.†So, Lucille Bluth! Walters joins recently cast Mayim Bialik, the actress previously known as Blossom. [Live Feed/HR]