Monk (9PM, USA)
Has Monk found a new career? When a rich couple is killed, the detective goes undercover as a butler to investigate and discovers his OCD quirks actually make him a good servant. Sean Astin guest stars as the rich couple's son, who's crushing on Natalie.

NOTEWORTHY

Trading Spouses (9PM, Fox)
"God warrior" Marguerite Perrin must decide how her surrogate family must spend their prize money. Satan repellants for everybody!

Pageant School (9PM, CMT)
Miss America's probably watching all the Miss USA drama -- drinking! nudity! and (gasp) pregnancy! -- and shaking her perfectly-coiffed head.

Australian Open: Women's Final (9:30PM, ESPN2)
It's the Hit-and-Grunt Championship final between Maria Sharapova and Serena Williams.

Hunter and Hunted (10PM, NGC)
From the "did you know?" files: About 40 percent of all documented cougar attacks in North America occur on Vancouver Island, British Columbia.

ALSO NEW TONIGHT

1 Vs. 100 (8PM, NBC)
Class of 3000 (8PM, Cartoon)
Cowboy U (8PM, CMT)
Degrassi: The Next Generation (8PM, The N)
The Dog Whisperer (8PM, NGC)
The Lost Evidence (8PM, History)
Nanny 911 (8PM, Fox)

Beyond the Break (8:30PM, The N)
Trick My Truck (8:30PM, CMT)

Hyperdrive (9PM, BBC America)
Ms. Adventure (9PM, Animal Planet)
What Not to Wear (9PM, TLC)

Feel the Force (9:30PM, BBC America)

Back to the Dance Floor: Ballroom Bootcamp (10PM, TLC)
Dogfights (10PM, History)
Masters of Horror: Washingtonians (10PM, Showtime)
Paula's Party (10PM, Food Network)
Psych (10PM, USA)
The Soup (10PM, E!)

Starveillance (10:30PM, E!)

Best Week Ever (11PM, VH1)

Check your local TV listings for more

** Note: Bob Sassone's regular "What's on" posts will return Mon., Jan. 29. "What to Watch" will become a weekly post.