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Critic’s corner: What’s on TV Monday night

Tyler Golden/NBC

The Sing-off 9 p.m. NBC

Matching sweaters! Bad boy fedoras! Awkward choreography! No, my friends, I’m not describing a Color Me Badd reunion concert. This is the return of “The Sing-off.” The NBC a cappella extravaganza features singing groups that discriminate against musical instruments. This sort of music is not exactly my cup of moonshine-infused tea, but I am grateful for “The Sing-off.” It provides meaningful employment to faded 1990s pop stars Nick Lachey, Jewel (center), Ben Folds (left), and Shawn Stockman (right). Now, can we figure out a way to get Color Me Badd onto the show? I hear they’re available.

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James May’s Man Lab 10 p.m. BBC America

“Top Gear” host James May instructs gentlemen on nonessential skills that have been lost as a result of lounging in man caves watching 84-inch flat-screen televisions and sipping small-batch craft beer. In past episodes he’s demonstrated how to build a pool table and how to make free toilet paper. But tonight he’s showing the most essential skill of all: How to strap cameras on cats to improve a neighborhood watch program. Nothing says manly like deploying an army of fluffy, crime-fighting kitties wearing adorable little cameras.

Santa Claus Is Comin’ to Town 8 p.m., ABC

Wherein Burgermeister Meisterburger is defeated yet again.

A Christmas Story 2 8 p.m., CMT

I’d rather shoot my eye out than watch this.

The Great Christmas Light Fight 9 p.m., ABC

Have we learned nothing from watching “A Charlie Brown Christmas” for the past 48 years?

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