On TV Tonight, Monday 12/20/2010: PERFECT COUPLES, THE CLOSER and more December 20, 2010 On TV Tonight NEW 9 PM – 10 PM THE CLOSER “Living Proof” – 9pm TNT 10 PM – 11 PM MEN OF A CERTAIN AGE “Cold Calls” – 10pm TNT PERFECT COUPLES “Perfect Tens” – 10pm NBC REPEATS 8 PM – 9 PM 90210 “2021 Vision” – 8pm CW HOW I MET YOUR MOTHER “Cleaning House” – 8pm CBS RULES OF ENGAGEMENT “Play Ball” – 8:30pm CBS 9 PM – 10 PM CASTLE “A Deadly Game; A Deadly Affair” – 9pm ABC GOSSIP GIRL “War at the Roses” – 9pm CW TWO AND A HALF MEN “Warning, It’s Dirty” – 9pm CBS MIKE & MOLLY “First Kiss” – 9:30pm CBS 10 PM – 11 PM HAWAII FIVE-0 “Lanakila” – 10pm CBS THE OFFICE “Murder” – 9pm NBC Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)