Wow also had a similar idea! How are you getting the google review aggregate if you don't mind me asking? Even simply plotting Michelin restaurants seems like such a good idea in retrospect. I wanted to do something similar with famous food bloggers, maybe you can consider adding that to your list. Something like all of Mark Wein's recs on a map, with a link back to the original youtube video. Automatically adding data from different sources is the hard part I couldn't get over, especially since some of the videos don't have a location in the text.