OK, MB just knocked herself down a few pegs after I thought she was so in control with the whole Penny situation. I didn't realize she and Jeff were so acrimonious.
She basically said she wouldn't watch Jeff's show and left no doubt that she doesn't like him at all. Jealousy, me thinks. Jeff's performance comes so easy to him; it's something you can't teach and MB did not have the "it" factor.
Penny loves the villain role. She totally owns it.