“Parks and Recreation,” 7 p.m., NBC (new)
The one-hour season six premiere has Leslie and Co. in London, where she is being honored by a group saluting women in government. They go to “Hogwarts,” of course.
“The Big Bang Theory,” 7 p.m. and 7:30 p.m., CBS (new)
Season seven gets started with a two-parter. First, Leonard is away at sea, so Sheldon and Penny bond. Then, Leonard returns to a chilly reception from Sheldon.
“Grey's Anatomy,” 8 p.m. to 10 p.m., ABC (new)
We're still in the middle of the superstorm in this season 10 premiere. While mudslide victims arrive in the ER, Callie deals with Arizona's infidelity and Richard's life is in jeopardy.
“Glee,” 8 p.m., Fox (new)
The fifth season starts with a Beatles tribute. (Cory Monteith's death won't be addressed until the third episode.)
“The Michael J. Fox Show,” 8 p.m. and 8:30 p.m., NBC (new)
A two-part episode starts this series about a popular news anchor with Parkinson's who goes back to work after a five-year absence.
“The Crazy Ones,” 8 p.m. to 8:31 p.m., CBS (new)
Robin Williams and Sarah Michelle Gellar star in this show, whose pilot sees an ad executive trying to persuade Kelly Clarkson to sing a McDonald's jingle.
“Two and a Half Men,” 8:31 p.m. to 9:01, CBS (new)
Season 11 kicks off with Charlie's daughter dropping in on the gang.
“Parenthood,” 9 p.m., NBC (new)
As the fifth season starts, the Bravermans are enamored with Jasmine and Crosby's new baby.
“Elementary,” 9:01 p.m., CBS (new)
Holmes and Watson are back for a second season, traveling to London to help a former mentor.