Were we the only ones who jumped up and down when REI opened a store in San Francisco? Surely not. Ground zero for all things outdoors — gear for camping, hiking, biking, paddling, skiing, snowboarding, running (OK, we'll stop now before we hyperventilate) — REI has finally come to our town after residing for years in Berkeley and San Carlos. Beyond the sheer selection and the top-notch service from people who really understand the stuff they're selling, the shop offers great discounts for members and also does good deeds (donating a portion of its profits to environmental causes). And it's all 100 percent guaranteed. Forever.