I originally saw this on fazed.net and fark.com. since then, It has also been featured on Web Junk 2.0, The Soup, and probably a few others. If you havne't seen it, you're probably not wasting enough time on line.
These videos seem to feature all the English you need to know to visit New York.
There are two versions here. Be warned: you will get this song stuck in your head.