''American Graffiti,'' the 1973 film that put director George Lucas on the Hollywood map, returns to the big screen tonight when the Academy of Motion Picture Arts and Sciences hosts a 25th-anniversary showing at its Samuel Goldwyn Theater in L.A. It's clear that fans still revere the pre-Flower Power coming-of-age tale that stars Richard Dreyfuss, Harrison Ford, and Ron Howard, among others: The 1,000 tickets for the screening sold out in less than a day and a half -- faster than any other movie celebration that Ellen Harrington, AMPAS' special-events coordinator, has planned. (Lucas and some cast members will be on hand afterward to discuss the film.)

'' 'American Graffiti' represents a period of pop culture and pop music that America is eager to experience,'' Harrington told EW Online. ''Many people have a strong emotional attachment to the movie and to the relative innocence of that time.'' EW critic Ty Burr adds, ''It marked the birth of modern, baby-boomer nostalgia, and it served notice that the days of dark, uncompromising, 'artistic' Hollywood filmmaking were numbered. In its wake came 'Jaws,' 'Star Wars,' and the modern blockbuster.''