Actress-comedian Rachael Harris (Fat Actress, In the Motherhood) is relocating to Cougar Town to play the potentially recurring role of Shanna, Courteney Cox’s judgmental nemesis, sources confirm to me exclusively.

Wait, there’s more!

Ferris Bueller’s BFF, Alan Ruck — who’s currently recurring on FlashForward — has been cast as her husband, Frank. Look for Frank to develop a bit of a crush on Cox’s character, further inflaming the Jules-Shanna rivalry.

In case you didn’t hear, the Bill Lawrence-produced Cougar Town was just handed a full-season pick-up from ABC.