You sure can! I stopped by with my family while in San Fran on a road trip back in 2015. We only planned on hopping out, snapping a quick photo or two, then bundling back into the car and continuing on our way. But then, by sheer luck and coincidence, none other than Jamie’s wife Eileen pulled up out front. She saw us taking photos with the sign, and offered to give us a tour of the workshop if we helped her carry some supplies inside. Apparently Jamie was out to lunch at the time, so we didn’t get to meet him, but we did get to spend a good 10-15 minutes in the shop, talking to Eileen and looking at all the old MythBusters props. We even got our photos taken with some of them. Considering that the workshop has never offered tours, and we were probably some of the few people not on the production crew to see the inside of the workshop, it absolutely made my entire year.