This film is on an extended run at BFI Southbank from a new 35mm print. Full details here.
Chicago Reader review:
For better or worse, one of Steven Spielberg's best films (1977), and perhaps still the best expression of his benign, dreamy-eyed vision. Humanity's first contact with alien beings proves to be a cause for celebration and a form of showbiz razzle-dazzle that resembles a slowly descending chandelier in a movie palace. The events leading up to this epiphany are a mainly well-orchestrated buildup through which several diverse individuals—Richard Dreyfuss, Francois Truffaut, Melinda Dillon—are drawn to the site where this spectacle takes place. Very close in overall spirit and nostalgic winsomeness to the fiction of Ray Bradbury, with beautiful cinematography by Vilmos Zsigmond that deservedly won an Oscar. This is dopey Hollywood mysticism all right, but thanks to considerable craft and showmanship, it packs an undeniable punch.
Here (and above) is the original trailer.