Wipeout (7 p.m., Ch. 4): This 90-minute episode is a collection of highlights from previous episodes.
The Biggest Loser: Families (7 p.m., Ch. 5): The new season begins, and this time there's a twist. The competitors are in eight two-person teams four are husband-wife; four are parent-child.
90210 (7 p.m., Ch. 13): Kelly and Brenda argue about Ryan; Naomi confronts her father's mistress.
House (7 p.m., Ch. 13): Eight weeks after the death of his girlfriend, Wilson decides he's got to get away from House and quits his job. (Season premiere)
Privileged (8 p.m., Ch. 30): Laurel invites Megan to a big event; Rose's ex-boyfriend arrives with another girl.
PrimeTime (8:31 p.m., Ch. 4): A 90-minute episode titled UFOs ... Seeing Is Believing is, well, exactly what it sounds like. It's a report on whether we're alone in the universe and whether anyone from another planet has visited Earth.
P.O.V. (9 p.m., Ch. 7): In Calavera Highway, two brothers try to piece together their family's shattered history.