Tonight on TV

NFL football (6:30 p.m., ESPN): Bears at Eagles

How I Met Your Mother (7 p.m., Ch. 2): The gang remembers the events of Hurricane Irene.

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

The Sing-Off (7 p.m., Ch. 4): The competition continues.

Terra Nova (7 p.m., Ch. 13): A meteor knocks out all technology in the colony.

Gossip Girl (7 p.m., The CW): Blair's former minions and Charlie compete for a spot in the royal bridal party.

2 Broke Girls (7:30 p.m., Ch. 2): Max and Caroline take a job cleaning a hoarder's apartment

Two and a Half Men (8 p.m., Ch. 5): Alan becomes extremely emotional when Walden redecorates the beach house.

House (8 p.m., Ch. 13): Chase and Taub rejoin the team

Heart of Dixie (8 p.m., The CW): Zoe makes a chilling discovery.

Mike & Molly (8:30 p.m., Ch. 2): Carl meets an attractive woman.

Hawaii Five-O (9 p.m., Ch. 2): Danny cares for an orphaned dog.

Castle (9 p.m., Ch. 4): A casino owner is murdered

Rock Center With Brian Williams (9 p.m., Ch. 5): Greece's impact on the world economy.