How do you improve on one of the greatest movies ever made? With a shot-for-shot remake crafted by highly determined children, obviously. Raiders of the Lost Ark is such a classic of adventure filmmaking that many have tried to duplicate its success, but all those pretenders are doomed to failure. Except! The three Mississippi boys who spent seven years and five thousand dollars to painstakingly replicate the magic of the original Raiders managed to improve on Spielberg’s childlike enthusiasm with their naturally childish enthusiasm. The magic of cinema has never been quite so adorable. Tonight, both Raiders films hit the big screen. (SIFF Cinema Uptown, 511 Queen Anne Ave N,, 7 pm, $15)