“Radical Light: Alternative Film and Video in the San Francisco Bay Area” illuminates history of alternative cinema after World War II

In 1991, experimental filmmaker Ernie Gehr directed a 41-minute film from the outdoor glass elevator at the Fairmont Hotel in San Francisco.

Screen Scene: “Prince of Persia: The Sands of Time”

The mere idea of turning a video game into a live-action film is ambitious enough, with cinematic masterpieces such as “Super Mario Bros.” (1993) setting the bar. How can you top Dennis Hopper shooting lasers at John Leguizamo while giant lizard men roam around? “Prince of Persia: The Sands of Time” may boast a larger budget and 17 years’ worth of new technology, but neither saves it from sinking in the quicksand.