It's okay for a show set in NYC, I guess. I hate NY, but the characters are mostly okay, save for Wahlberg's excessive temper issues. And Jamie is kind of a wimp or too PC sometimes and his partner is too pushy. I'm afraid they'll get married. But given their stated backgrounds and ethnicity, etc., it's not a bad show. I think she's of Serbian descent.
I can't stand Linda, the nurse: too rough edged and with an irritating voice. She's the hotheaded detective's wife. The couple reeks of what I hate about New York.
Donny W. is also sometimes on his wife's show, whatever that is. Found it once by accident, or a clip about it on an entertainment show. She also has a Sirius radio show, I think. Jenny McCarthy. I think their show is Jenny Loves Donny or some such. I think it's on the E! channel. Donny was filming there on a break during, Blue Bloods. His character wasn't in the scenes they were filming just then, so he loped on over to Jenny's show.