How to tell Miami's film buffs from our town's film fanatics? Simple. The buffs can be found on Sunday afternoons inside the Alliance Cinema, forsaking a day at the beach for two hours in a darkened room, blissfully soaking up that week's Cinema Vortex selection. As for Miami's premier film fanatic, that would be Baron Sherer, the fair-haired young man orchestrating the whole shebang: taking tickets, hunching over the projector, often painstakingly splicing together the reels. It's obviously a labor of love for Sherer, with the only real payoff being the sheer joy of turning audiences on to his own personal faves and latest cinematic discoveries. And like the best film series, Cinema Vortex most definitely is an extension of its curator -- Sherer's brain unspooling before a flickering light. That means plenty of vintage film noir, lost classics of the American New Wave like Point Blank, as well as offbeat foreign flicks such as last year's Made in Hong Kong and Jean-Luc Godard's 1965 dystopian portrait Alphaville. The common denominator is simply good taste and the unspoken realization that you won't see any of these movies anywhere else in Miami.