“Harry Potter” 8, “Transformers” 3, “Pirates of the Caribbean” 4, “X-Men” 5,”Cars 2,” a handful of comic book flicks — this summer looks a lot like the last few summers. How Hollywood can keep some of these franchises going is anyone’s guess — they can’t make J.K. Rowling write a new Harry Potter book, after all. Yet even those moviegoers not particularly interested in explosions and computer-generated images (and, yes, there are a few) have some films to look forward to during the dog days of summer. Woody Allen isn’t the only director providing some food for thought amid the popcorn this season … A laugh a minute