NFL football (6:15, ESPN): Ravens at Texans

How I Met Your Mother (7 p.m., Ch. 2): Lily and Marshall receive shocking news that has a profound impact on the gang.

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

The Sing-Off (7 p.m., Ch. 5): The six remaining groups have to sing rock tunes as well as perform their favorite guilty-pleasure songs.

House (7 p.m., Ch. 13): A seemingly healthy 14-year-old collapses during a skateboarding exhibition.

NBA basketball (7 p.m., FSN): Warriors at Jazz

Rules of Engagement (7:30 p.m., Ch. 2): Russell borrows a holiday gift concept from Adam

Two and a Half Men (8 p.m., Ch. 2): Depressed after his breakup from Courtney, Charlie goes to see his psychiatrist (Jane Lynch).

Mariah Carey: Merry Christmas to You (8 p.m., Ch. 4): The singer performs new and classic holiday songs at the Orpheum Theatre in Los Angeles.

Mike & Molly (8:30 p.m., Ch. 2): Mike tries to find a gift for Molly for their first Christmas together.