Sarah’s Mom Cast; Guess Who! Posted by: Liz on October 3, 2011 in Casting News, News 8 Comments If you’re new here, you may want to subscribe to our RSS feed and follow us on Twitter. Thanks for visiting! Cheryl Ladd is the winner! It has just been announced that Cheryl will portray Sarah’s momma in this season of Chuck, proving once again that Chucksters know how to arm-chair cast. Nice call! Show of hands: how many of you called this one?