The joint is more than 50 years old -- virtually pre-Columbian by Broward standards -- and landmark enough that when the New York Times wrote a national story about the success of Fahrenheit 9/11, it included a large photo of the half-block queue beneath that marvelous marquee. How to stay prominent and relevant for five decades in this land of perpetual flux? Keeping the fare fresh, for starters, and participating in the Miami Gay and Lesbian Film Festival and the Fort Lauderdale International Film Festival. It also provides a friendly staff, a location within piggy-backing distance of post-film beers, coffee, and sushi, a lobby bulletin board where viewers praise or flay just-seen movies (such a human touch), and the so-called "World's Greatest Popcorn" (which it must be, for who would claim such otherwise?). The capper for Gateway is its woolly lineup, a blend of big-budget blowouts beside brilliant blips: The Aristocrats, Gay Sex in the '70s, Transamerica, The Corporation, Enron: The Smartest Guys in the Room, The Station Agent, etc. Chances are, any recent movie you actually mulled after its final credits you had to go to Miami Beach or the Gateway to view.