Every now and then I come across a YouTube video that's utterly amazing. This is video called Bike Thief is one of them. These guys go about stealing bicycles from various locations in New York - just to see how easy it is. Not to worry, they're stealing their own bikes. They use a number of different tools and techniques to get the job done, including a grinder! It's funny to see how many people actually stop this guy. It's only about 5 minutes long, so check it out
here.