With the closing of a couple of clubland staples over the past year, the nocturnal socialite has fewer options from which to choose. Fortunately, Enigma Afterhours -- which began as Rezodanc in the spring of 2001 -- has swiftly filled the late-night void by opening its doors at the unsaintly hour of 1 a.m., Thursday through Saturday nights. With a mostly local and progressive roster of talent, including Friday-night sets from members of the prominent Casa Del Soul crew, the stylish Larimer Street locale has upped Denver's cosmo quotient considerably. A dedicated dancehound knows sleep is for wimps. So unplug your alarm clock, slam some Starbucks (or whatever elixir you fancy) and make a move for the dance floor. At Enigma, the beats go on.