ABC is bring back “Monk,” the quirky whodunit starring Tony Shahloub of “Wings” and “Men in Black” as a detective with a severely advanced obsessive/compulsive disorder. I’ve seen it a few times, and it’s a good show; it also fills a niche, for the lighter mystery show of the “Murder, She Wrote” or “Columbo” variety, a genre that’s not that big with 18-24-year-old TV viewers, but that should draw good ratings nonetheless. Kudos to the network both for correcting a mistaken decision to pass on the show and for putting something on the air that’s neither tailored to the under-25 crowd nor a sop to the Emmy voters, but is just good entertainment.