The Big Bang Theory: : Penny (Kaley Cuoco) develops a rivalry with a sexy new neighbor (Valerie Azlynn). (8 p.m., WJZ-Channel 13)
Chuck: : A heartless agent is sent to evaluate Sarah's (Yvonne Strahovski) performance as Chuck's (Zachary Levi) handler after he reveals his feelings about her. (8 p.m., WBAL-Channel 11)
House: : A man (Mos Def) awakens in a New York hospital after a bicycle accident, unable to move or communicate. (8 p.m., WBFF-Channel 45)
Greek: : As a new season gets under way, Casey (Spencer Grammer) returns from her internship with plans to move out of the ZBZ house. (8 p.m, ABC Family)
24: : The FBI is forced to collaborate with other...