Featuring six screens and a policy of booking foreign, independent and classic films 365 days a year, the new Starz FilmCenter in the old Tivoli Theaters on the Auraria campus represents a major advance in Denver's cultural life. Operated by the Denver Film Society, which produces the Denver International Film Festival each October, and Dallas- and New York-based Magnolia Pictures, the city's first cinématheque will also screen retrospectives, Saturday-morning children's programs and experimental works, providing a valuable supplement to Denver's major art-house chain, Landmark Theaters. Now, let's all go to the movies.