Tonight on TV

NFL football (6:30 p.m., ESPN): Chiefs at Patriots

How I Met Your Mother (7 p.m., Ch. 2): Barney and Ted consider making a life-altering decision together.

Dancing With the Stars (7 p.m., Ch. 4): The competition continues.

The Sing-Off (7 p.m., Ch. 5): The competition continues.

Terra Nova (7 p.m., Ch. 13): Taylor tries to figure out who in Terra Nova has been passing information to the Sixers.

Woody Allen: American Masters (8 p.m., Ch. 7): A look at the reclusive director and comedian.

House (8 p.m., Ch. 13): The team discovers its teenage patient isn't just being dramatic when her symptoms worsen.

Hawaii Five-0 (9 p.m., Ch. 2): McGarrett travels to North Korea with Jenna Kaye to deliver ransom to rebels holding her fiance hostage.

Castle (9 p.m., Ch. 4): The team searches for a sniper who is terrorizing New York.

Rock Center With Brian Williams (9 p.m., Ch. 5): The latest on the Penn State sexual abuse scandal.