Today is Grandparents Day. So where are all the movies aimed at Americans celebrating the holiday? Is it that we still don’t honor the occasion the way we do with Mother’s Day and Father’s Day, even after 35 years of its existence? Or, is it that, in spite of always being proven wrong by movies such as The Best Exotic Marigold Hotel, Hollywood still thinks seniors don’t go to the movies? It might be a combination, though I did take notice the other day that the trailer for Parental Guidance arrived appropriately this very weekend. The comedy stars Billy Crystal and Bette Midler as a couple who have to watch their grandchildren while their daughter (Marisa Tomei) goes on a business trip. And the humor apparently comes from the elder duo’s generational disconnect from kids today. First question: Are Billy Crystal and Bette Midler are old enough to play grandparents now? Well, they’re in their mid-60s, which seems about right looking at it as someone who feels late to the parenting game myself. My mom and dad are in that age group, and though my kid is an infant, there are some people from my high school class already seeing theirs off to high school this year.