A minor orgy of conspicuous consumption and product placement, “Hollywood Hi-Tech” (8:30 p.m., DIY) goes to the already swank homes of Hollywood stars and outfits them with expensive gadgetry. Janna Robinson hosts. As on “Let’s Make a Deal,” we’re shown the price of everything.

Over the course of its run, Robinson will renovate the homes of Oliver Stone, Patrick Warburton and Nancy O’Dell. First up: A man-cave becomes an entertainment center for Kevin Connolly (“Entourage”). Products include a 110-inch projection screen TV and a sound system requiring a subwoofer that engulfs an entire wall. Does the man have neighbors?

True to his “Entourage” character, Connolly can’t wait to give the eye-popping theater a whirl. So what does he watch? A big-screen epic like “Lawrence of Arabia”? “Lord of the Rings”? Does he plug his fellow HBO show “Game of Thrones”? That’ll certainly rumble the subwoofers! No, he turns on a hockey game.

• Another thing Connolly might watch on his mind-numbing system is “Deadliest Warrior” (9 p.m., Spike). Now in its third season, “Deadliest” uses computer graphics to speculate on the outcome of battles between fighters from history and legend.

• And should Connolly flounder post-“Entourage,” lose his lease, be forced to put his fancy home theater in storage and then forget to make the payments, it could turn up on “Storage Wars” (9 p.m., A&E), where fortune-hunters bid on the unseen contents of storage facilities.

Sometimes they end up with treasures and just as often nothing but trash. It’s like Secret Santa in reverse, if your idea of Christmas is preying on the down-and-out for fun and profit.

• Music biographies abound. “Behind the Music” (9 p.m., VH1) profiles hip-hop star Nelly, from his rather humble beginnings and unstructured family life to his stint in a group called the St. Lunatics and his breakout release “Country Grammar,” which sold close to 10 million copies.

Filled with period footage, “Led Zeppelin: Dazed and Confused” (9 p.m., Bio) chronicles one of the most notable bands of the classic-rock era.

Further down the musical food chain, the 2010 documentary “Lemmy” (7 p.m., VH1CL) celebrates Lemmy Kilmister, the eccentric member of Motorhead and a friend and contemporary of Jimi Hendrix and the Beatles, who would prove to be an enduring influence on punk, alternative and metal music.

Tonight’s other highlights

• The top 10 perform on “So You Think You Can Dance” (7 p.m., Fox).

• A search for a lost city of gold on “Secrets of the Dead” (7 p.m., PBS).

• “America’s Got Talent” (8 p.m., NBC) continues.

• An ex-con seeks redemption on “Royal Pains” (8 p.m., USA).

• Temperatures rise on “Love in the Wild” (9 p.m., NBC).

• Scheduled on “Primetime Nightline” (9 p.m., ABC): tales of demonic possession.

• A rookie consistently skips practice on “Necessary Roughness” (9 p.m., USA).

• A long stretch between fires on “Rescue Me” (9 p.m., FX).

• Doris Roberts guest-stars on “Hot in Cleveland” (9 p.m., TV Land).