FILM: Photographer Scott Pasfield presents a slideshow, discussion and signing of his new book, Gay in America, featuring 140 gay American men in 50 states. Purchases of the book will benefit non-profit AIDS fighting organizations, The Magnet Center and Under One Roof. The presentation will be followed by a reception at nearby Under One Roof. (7 p.m., Magnet Health Clinic, 4122 18th Street)

CONTEST: Flavorpill describes Mr. Hyphen 2011 as turning "the beauty pageant concept on its head," in which male Asian American activists go up against one another for the Mr. Hyphen title and $1,000 prize money for the nonprofit of their choice, featuring a Sleepwear portion and a Talent portion with guest hip-hop and comic performances. (7 to 10 p.m., Brava Theater Center, 2781 24th Street)

ART/SCIENCE: The Lab presents Hypothesis: An Art/ Science Fair, which showcases a "collection of displays exhibited in a traditional science fair format where viewers will be able to see and explore the questions posed from multiple artistic, scientific, and other perspectives, in conjunction with the Bay Area Science Festival." (7:30 to 11 p.m., The Lab, 2948 16th Street)