Most of San Francisco's trendier ice cream parlors are located east of Twin Peaks, but for all the indie cred you get from waiting in line at Humphry Slocombe or Bi-Rite, they don't offer the adventure you'll find at Polly Ann Ice Cream in the Outer Sunset. If you can't decide which of their dozens of exotic flavors to get, a big wheel on the wall can decide for you. To make it interesting, you're required to buy whatever the wheel lands on — even if it's Durian. Nay, especially if it's Durian. Welcome to a brave new world of flavor.