Too bad you can't copyright ideas because Neil Simon would be even richer. "How To Be a Gentleman" (8:30 tonight, CBS), is basically "The Odd Couple" but odder and not as funny.

Andrew (David Hornsby) plays a refined columnist told to tweak his etiquette column; an old and more rough-hewn classmate (Kevin Dillon) ends up helping him learn a different style of manhood. And Andrew teaches the rough guy a thing or two. (Mary-Lynn Rajskub is wasted in her role as Andrew's sister.)

This didn't click with me at all. It's like "According to Jim"; one of those shows you keep on until the show you really want to watch comes on.

How to Be a Gentleman (8:30pm, CBS) - A new odd-couple sitcom about a friendship between an etiquette columnist and a macho trainer. Tonight, Andrew is told to put a contemporary twist on his column, so he hires a bad boy from his past to be his life coach. Adrienne has watched it and gives her opinion.

Parks & Recreation (8:30pm, NBC) - Ron's first ex-wife, Tammy One (Patricia Clarkson), reenters his life and tries to control his every move. Meanwhile, Ann makes a PSA with help from Chris. Megan Mullaly also guest stars (Tammy Two).

Person of Interest (9pm, CBS) - Finch and Reese are puzzled when the machine turns up a deceased person of interest. Also, Finch reflects on the machine's origin.

Project Runway (9pm, Lifetime) - Fashions from the 1970s inspire the creations of the remaining designers.

Private Practice (10pm, ABC) - Pete has a heart attack in the Season 5 premiere. While Sam, Cooper, Charlotte and Amelia try to save him, Violet is nowhere to be found. Also, Addison seeks out Jake (Benjamin Bratt) because she wants a baby.

Prime Suspect (10pm, NBC) - Duffy isn't happy with Jane's participation in his homicide-kidnapping case. In other events, Jane meets Matt's son for the first time.

It's Always Sunny in Philadelphia (10pm, FX) - Frank finds himself in the child beauty pageant business and fears that people might think that he's in it for the wrong reasons.