Rules of Engagement (8:30pm, CBS) - In the sixth season opener, Russell's dad meets Liz and Russell (David Spade, left) goes to great lengths to win his dad's approval.
Grey's Anatomy (9pm, ABC) - Meredith is on the outs at the hospital so she must enlist Lexie to get Derek interested in a brain tumor case. Meredith also gives April advice in secret about Bailey's clinical trial.
Miss Representation (9pm, OWN) - The negative and sexual media depictions of women are assailed by an array of prominent women, including Katie Couric, Jane Fonda, Nancy Pelosi, Condoleezza Rice, and Rachel Maddow.
The Secret Circle (9pm, CW) - Faye plots against a former boyfriend who breaks her heart when he suddenly returns to town and sets his sights on Cassie.
The Mentalist (10pm, CBS) - A woman's body is found on an island off the California coast, and the team questions an odd group assembled on the island.
It's Always Sunny in Philadelphia (10pm, FX) - It's not always sunny in Philadelphia: an apocalyptic storm is bearing down on the city and everyone's in panic mode -- except for Frank.