MATCHING PAIR: Glass on Glass is the nerd-porn art event of the season: inscrutable composer Philip Glass and This American Life's Ira Glass will come together at St. Ann's Warehouse to talk about the creative process, perform, and generally bask in the glow of your love. 6PM.
BUY IT NOW: The economy's tanking, what better time to start your own eBay business? Auction-site expert Barbara Weltman talks at the NYPL's Library of Science about how you can turn your hobby into cash. 5:30-7pm.
HIGH HONORS: Cabaret legends will crowd into the Gotham Comedy Club for the Back Stage Bistro Awards, honoring local talent and giving lifetime achievement honors to some very, very big names. Seriously, you can party with Liza Minnelli and Charles Aznavour for about $50, plus a two-drink minimum. 6:30PM.