I Just Want My Pants Back 11 p.m., MTV
Based on a novel of the same name by David J. Rosen, this new series chronicles the post-college exploits of a snarky quartet of Brooklyn hipsters as they wrestle with careers, identities, and romantic partnerships, of both the long-term and one-night variety. Lead character Jason (the Andy Samberg-esque Peter Vack, pictured) is also looking to retrieve his blue jeans from a woman he thought might’ve been Ms. Right but turned out to be a sticky-fingered Ms. Right Now. The show, from veteran director Doug Liman (“Swingers,’’ “Mr. and Mrs. Smith’’), toggles between sincerely funny and a little too self-satisfied, which sounds about right for the quarter-life crises it explores.
The Union 9 p.m., HBO
While this Cameron Crowe-directed documentary is ostensibly about Elton John recording an album with one his heroes, legendary singer-songwriter-sideman Leon Russell, it also offers an intriguing glimpse at the nature of inspiration and collaboration.
American Idol 8 p.m., Channel 25
Madonna releases a new album next month and the promo tour has begun as she premieres her new video, “Give Me All Your Luvin’, ’’ tonight in advance of her halftime show at the Super Bowl on Sunday.
Love Etc. 8 p.m., OWN
This doc follows five couples in different stages of romance.
Grey’s Anatomy 9 p.m., Channel 5
Meredith wonders “what if’’ about her wonderful life. Temporary fantasy retcon alert.