CBS announced 'The Good Wife' star Christine Baranski will be reprising her role for the first episode of Season 5.

Baranski, who currently stars as legal eagle Diane Lockhart on CBS's hit drama 'The Good Wife,' plays Dr. Beverly Hofstadter, Leonard's overly analytical mother on 'Big Bang Theory.'

The actress, who is currently nominated for an Emmy for her work on 'The Good Wife,' has received two nominations for her guest work on 'BBT.'

We wonder how Sheldon will react to the good doctor's return ...

'The Big Bang Theory' Season 5 premieres Sept. 22 at 8:30PM ET.