Viewers who like to watch their cold-weather sports from the vantage point of a heated TV room are in luck. Winter X Games (8 p.m., ESPN) return with more than 24 hours of action on the white stuff presented in high definition on ESPN, ESPN2 and ESPN3.com.

Tonight’s action includes Snowboard Superpipe Men’s elimination and Skiing Slopestyle Women’s Final and Skiing Superpipe Women’s Final. I have no idea what I’m writing about.

For fans who just can’t wait for prime time, Skiing Slopestyle Men’s Elimination kicks off at 11 a.m. on ESPN2.

• Did you ever wonder why every time you go to the supermarket with the intention of only buying a quart of milk, you end up leaving with $30 worth of other stuff? It’s no accident. The secrets behind sneaky merchandising can be found on “Supermarkets Inc.: Inside a $500 Billion Money Machine” (8 p.m., CNBC).

After watching this, you’ll no longer think of yourself as a shopper but as a guinea pig in what has been described as the longest-running psychological experiment in history. That milk you wanted is located on the far end of the store for a reason. To get there, you have to pass by thousands of items — 65,000 in the average supermarket. That’s a lot of temptation. And that’s why Americans spend an average of $1.5 billion every day in the supermarket. And some of the most cutting-edge retailers are using every moment you spend in their store to collect data on you and your shopping habits.

• “Archer” (9 p.m., FX), a very adult cartoon about a privatized spy beset with a massive ego and a dysfunctional workplace, enters its second season. A second episode airs at 9:30 p.m.

• “The Real Sanctum” (8 p.m., National Geographic) recalls a near-death experience in an undersea cave, the inspiration for the new James Cameron film “Sanctum,” opening on Feb. 4.

Tonight’s other highlights

• Auditions continue on “American Idol” (7 p.m., Fox).

• Narrated by Dustin Hoffman, the film “Against the Tide” (7 p.m., Documentary Channel) recalls one activists efforts to call attention to Nazi atrocities during World War II.

• A killer takes his time on “CSI” (8 p.m., CBS).

• Andy consults some outside experts on “The Office” (8 p.m., NBC).

• “The Gravedigger” attracts violent attention on “Bones” (8 p.m., Fox).

— Symptoms erupt on a reality show on “Royal Pains” (8 p.m., USA).

• Jane’s in-law falls under suspicion on “The Mentalist” (9 p.m., CBS).

• Tracy becomes the subject of a reality-TV show on “30 Rock” (9 p.m., NBC).

• The state must compensate a wrongly imprisoned man on “Fairly Legal” (9 p.m., USA).

• Todd keeps Charlie in the dark on “Outsourced” (9:30 p.m., NBC).