Today on TV

NFL (6:30 p.m., ESPN): Carolina at Dallas

How I Met Your Mother (7 p.m., Ch. 2): Ted goes on a blind date with someone he dated years ago.

Dancing with the Stars (7 p.m., Ch. 4): The remaining contestants — including Donny Osmond and his partner — perform. Another team will be eliminated in Tuesday's episode.

Heroes (7 p.m., Ch. 5): Peter meets a reluctant new hero. The ratings for last week's two-hour season premiere were not good, and they didn't deserve to be. It was a big bore. I used to love this show. At this point, it's not that I hate it, it's just that I can't bring myself to care anymore. Sigh.

The National Parks: America's Best Idea (7 and 11 p.m., Ch. 7): Part 2 of this very good six-part, 12-hour documentary series. (Continues Tuesday)

House (7 p.m., Ch. 13): House quits.

Accidentally on Purpose (7:30 p.m., Ch. 2): Billie snoops through Zack's stuff.

Two and a Half Men (8 p.m., Ch. 2): Chelsea convinces Charlie to let Alan's girlfriend move in.

Lie to Me (8 p.m., Ch. 13): The team interrogates a possible Supreme Court nominee. (Season premiere)

Gossip Girl (8 p.m., Ch. 30): Georgina is interested in Dan; Vanessa is suspicious of Scott.

Big Bang Theory (8:30 p.m., Ch. 2): Things are awkward between Penny and Leonard.

CSI: Miami (9 p.m., Ch. 2): A gunman takes hostages in the lab.

Castle (9 p.m., Ch. 4): A pair of seemingly unrelated murders turn out to be linked.

Lincoln Heights (9 p.m., ABC Family): Bishop is back, and he wants revenge.

Greek (10 p.m., ABC Family): Rusty and Jordan are forced to examine their relationship.