I’ve latched onto something about recent romantic comedies. If Justin Timberlake and Jason Segel are both in the movie, it doesn’t suck. “Friends with Benefits” was the first one I saw, and now “Bad Teacher” (2011). What an unexpected surprise. I had been brainwashed into disliking Cameron Diaz, but she is a skinny, shot-out bundle of self-mocking fun. And this movie doesn’t even become a real romantic comedy until a couple of late-game hints are followed by a climax during the denouement (what did I just say?). Timberlake is great at subtly mocking his former boy-bandiness. Segel’s just damn funny.