Forget Jennifer Lawrence’s retina-burning red gown, Ellen’s shamelessly promotional tweet, and Kim Novak’s wind-tunnel face. The real excitement was at Oscars Diner, where we partied with Drew Barrymore, Vin Diesel, Heather Locklear, and other beloved B-listers. Okay, they were just autographed 8×10 glossies, but even so they were much more animated than some of the live presenters on TV. And so what if Oscars Diner was our place decked out with apostrophe-challenged placemats and menus, wrapped straws, and packaged butter pats? Imagine our guests’ reaction when the heavily tattooed cook and gum-chewing waitress (who looked just like us) introduced themselves as Hank and Gladys! I detected mild amusement. Fortunately, Chris created a fine diversion…