Today on TV

NBA (5:30 p.m., FSN): Jazz at Knicks

NFL (6:30 p.m., ESPN): Steelers at Broncos

How I Met Your Mother (7 p.m., Ch. 2): Robin and Barney hit a rough patch in their relationship, and Robin tries to break them up.

Dancing With the Stars (7 p.m., Ch. 4): The remaining five teams perform. Donny Osmond is still in the running.

Heroes (7 p.m., Ch. 5): Sylar battles for control of Parkman's body.

House (7 p.m., Ch. 13): A teenage girl loses the ability to distinguish fact from fiction.

Accidentally on Purpose (7:30 p.m., Ch. 2): Billy inadvertently causes Abby and Nick to break up. CBS has given this show a sort of half-hearted vote of confidence — the network ordered five more episodes, which is still four short of a 22-episode full season.

Two and a Half Men (8 p.m., Ch. 2): Charlie and Alan wake up with a strange woman.

Trauma (8 p.m., Ch. 5): Glenn puts his career at risk.

Lie to Me (8:01 p.m., Ch. 13): Lightman, Foster and Reynolds travel to Las Vegaas to search for a missing World Series of Poker finalist.

Gossip Girl (8 p.m., Ch. 30): Chuck and Nate try to patch things up between Serena and Blair.

Big Bang Theory (8:30 p.m., Ch. 2): When Leonard and Penny argue, Sheldon tries to play peacemaker.

CSI: Miami (9 p.m., Ch. 2): In the first of a three-part crossover that airs on all three "CSIs" this week, Ray Langston (Laurence Fishburne) travels to Miami when a severed leg found in the Everglades turns out to be from a girl who disappeared in Las Vegas. On Wednesday, Langston is on "CSI: NY" when the investigation leads to an interstate trucking ring that specializes in human cargo and black-market organ harvesting. And on Thursday, Langston is back on "CSI" as the search for the young girl taken hostage leads him to a prostitution ring in Las Vegas.

Castle (9:02 p.m., Ch. 4): Castle and Beckett uncover a prominent family's secret scandals.Weeknights on TBS

"Lopez Tonight" debuts Monday and will air Monday-Friday at 9 p.m. MT (with repeats at midnight).

The debut episode will also air on TNT (Monday, 9 p.m.) and TruTV (Monday/early Tuesday, midnight).