As someone who prides himself on knowing exactly where to go, or more importantly, where to not go when traveling, I recently discovered something in San Francisco that caught me a little bit off-guard. I've been to this great city many times over the years for business or for quick weekend getaways and have explored nearly every neighborhood, eaten at some of the best restaurants and checked out all the major museums. Or so I thought. On a recent trip to Frisco (the locals prefer you don't  more...