NFL football (6:30 p.m., ESPN): Giants at Cowboys

How I Met your Mother (7 p.m., Ch. 2): Marshall and Lily try to figure out how to conceive a baby with the gender of their choice.

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

Chuck (7 p.m., Ch. 5): Chuck, Sarah, Casey and Morgan must stop a doctor from releasing a toxin that induces nightmares.

Rules of Engagement (7:30 p.m., Ch. 2): Audrey starts a cookie business.

Two and a Half Men (8 p.m., Ch. 2): Charlie has difficulty dealing with dating a slightly older woman.

The Event (8 p.m., Ch. 5): Sean encounters a mysterious conspiracy theorist while looking for answers in Leila's home.

Lie to Me (8 p.m., Ch. 13): Lightman becomes involved in a game of cat-and-mouse with a beautiful woman.

Hawaii Five-0 (9 p.m., Ch. 2 When the CEO of a successful surf company is murdered, Kono revisits her past.

Castle (9 p.m., Ch. 4): Evidence indicates a notorious serial killer known as "The Triple Killer" is on the loose.

Chase (9 p.m., Ch. 5): Annie's absence forces Luke to step up to the plate.