As I watched the Nadal-Djokovic US Open Finals yesterday, I wondered about the logo that Djokovic was wearing on his clothing. It looked like the logo of the Tata Group, but I wasn't sure. Arvind suggested that we try Google Goggles.I found a picture of Djokovic through an images search, zoomed into it on my computer, took the photo shown here with my Android phone and then fed it to Goggles. Goggles nailed it! The first and only result I got back was Sergio Tacchini.
It was amazing, given that my photo was rather crappy, and taken off an image on my monitor. I suppose I could also have found the answer through Wikipedia, but Goggles was just so much cooler to see in action.