“Let It Ride” was a happy little diversion that brought back memories. Of 1989 Hialeah, Fla. (used to live there). Of Richard Dreyfuss (God, he’s always so obnoxious, but you sorta don’t mind – his characters evoke a big-screen version of George Costanza). Of Teri Garr (had a little thing for her, which the lingerie scene rekindled). Of Jennifer Tilly (have a big thing for her) serving as a battlefield upon which her dress and breasts wage war. It’s one of those “day in the life” movies. Dreyfuss, a semi-degenerate horse gambler with colorful friends, is having a very good day.