UPDATED: For info on coverage of tonight's memorial service in Tucson, read this.
Live to Dance (8pm 9pm, CBS) - The 18th act is announced and two acts advance to the next round. We'll be posting recaps of this show starting tomorrow. Update: President Obama will speak at a memorial service in Tucson tonight between 8 and 9pm, moving this show to 9pm ET.
Marching Once More (8pm, UNC-TV) - A new locally produced documentary about a reunion of veterans (three of them from North Carolina) commemorating the 60th anniversary of the Battle of the Bulge in Europe. "North Carolina's WWII Experience" airs after this at 9pm. Read more.
Modern Family (9pm, ABC) - Mitchell and Cameron have a chance encounter with Mitchell's old girlfriend (Mary Lynn Rajskub) and Gloria's efforts to befriend another couple annoy Jay. All ABC sitcoms are new tonight.
Off the Map (10pm, ABC) - The premiere episode of another Shonda Rhimes doc drama, this one set in the jungles of South America. It has Zach Gilford from "Friday Night Lights," but mostly, it's just a ripoff of "Grey's Anatomy" moved to a jungle (and "Grey's" is miles better). Check out our full review.
Law & Order: SVU (10pm, NBC) - A woman (A.J. Cook) is raped by a masked man and her partner is severely beaten by him. The injured woman's estranged father, played by Jeremy Irons, is notified of the incident. When police question him, they find themselves confronting an uncooperative man with a sordid past.
Brooke Cain isn't always proud of the number of hours she logs in front of the TV, but her loss of brain cells can be your gain. From reality shows to sitcoms to the more serious stuff, Brooke keeps her DVR smoking so that she can help keep you in the know. Brooke also tweets for Happiness is a Warm TV (you can follow