I always think Robert Downey Jr. can do no wrong, but “Iron Man” was no “Home for the Holidays,” let alone “Kiss, Kiss, Bang, Bang.” I’m glad I saw it, if only for the dramatic tension of wondering how he dealt with caressing all those glasses of brown booze, given his issues. But things fell apart midway through when his character started nattering about needing “a good American cheeseburger” and then showed up with shit from a Burger Death bag. A real superhero would be rescuing the immigrants being rounded up in raids on slaughterhouses lately, not ingesting the gray matter that exploitation keeps cheap. What’s funny is that the producers could have gotten a real restaurant to spring for the brazen product placement. It would not have been a bigger waste of money than the bus-side ads a Flatiron joint is running around town. Does anyone ever decide on dinner off the M96?