"The Big Bang Theory" hasn't even premiered, and they are already pulling out the special guest stars. Sara Gilbert will show up for at least one episode, if not more, says Reuters.
The new CBS sitcom stars Johnny Galecki, who in case you didn't remember, played Gilbert's boyfriend-then-husband on "Roseanne" for a few seasons. During one of the show's early episodes, Galecki's geek Leonard will get up the nerve to ask Gilbert out on a date.
"The Big Bang Theory" premieres Monday, September 24 at 8:30 p.m. (EST) on CBS. -- Rachel Cericola