On a darkened on-ramp to the Brooklyn-Queens Expressway, I once hit a pothole so deep that it dented the rim of my Integra. Years later, on a stretch of Lafayette Street near City Hall, I hit another pothole with so much force that the Golf I was driving freaking deployed the passenger-side airbag. Google the word "pothole" and the number one link is to Wikipedia's description. The number two link is to New York City's Department of Transportation website.
The NYC DOT's Pothole Gang (probably not their official name) fixes up to 4,000 potholes a day. Their goal is to fix them as fast as they find them. And to find them, they rely on agitated motorists like me taking the time out of our day to report a pothole's location to the DOT's website.