I recently had the opportunity to dine at Mission Street Foods, which is a temporary restaurant in the Mission District that sets up shop inside a hole in the wall Chinese restaurant. MSF is only open two days a week, and as you can imagine it's a long wait to get some tasty grub. They feature guest chefs from around the world, making every night very different. It's been going on for a couple of years now, and is now raising funds to secure their own location. The cool part about MSF is that they donate all their proceeds to charity. If you're interested in donating money to their cause, click here.
Here's a documentary that covers founder, Andy Myint, and his reason for building this non-profit.