WE’VE SAID IT before. While we like to think that kids really like the things we adults like, it just ain’t so. Thus for every “Ratatouille” – with cooking jokes and Parisian skylines to delight every Mom – there are five Pokemon sequels, “Bolt,” and another Teenage Mutant Ninja Turtles movie, all making us wonder what chaos really goes on in those little minds. The “Ice Age” franchise fits the latter category, by our lights. The animation pales in comparison to Pixar’s. The stories don’t make sense. Critics are never impressed. But there is one thing no one can dispute – the last installment debuted to a stupefying $68 million. Given that everyone will have already seen “Up,” parents will be dragged in for “Ice Age 3,” after which we can all scratch our heads together at the $70 million it seems likely to deliver this time around, too. 5/25/09.