Marc Malkin Senior Film Awards, Events & Lifestyle EditorWelcome to this week’s “Just for Variety.”If you haven’t taken a look at Diane Keaton’s Instagram feed, you really should. The 76-year-old Oscar winner entertains her 2.1 million followers with a range of video posts. Some of my favorites include a photomontage of famous men — Justin Bieber, Lil Baby, Oscar Isaac and Kodi Smit-McPhee, to name a few — set to “It’s Raining Men,” and another explaining why she prefers almonds to walnuts while she shows off her snack closet.