Even if you don’t care for romantic comedies, you have to credit the late Garry Marshall with crafting some of the genre’s best. Pretty Woman, The Princess Diaries. So it’s a shame that before he rolled his closing credits last July he was concentrating on such all-star, holiday-murdering drivel as Valentine’s Day and New Year’s Eve. But those seem like high art compared to this mawkishly manipulative cash grab. Good: If you’re bored with one of the dozen plots, it will change in about four minutes. Bad: the next one’s boring, too. Do NOT take your mother to see this unappealing, concocted crapfest.  (118 min)