Kettlebells have been around for a while but recently they are becomming more and more popular for everyday use at the gym. At my gym, we got a set in about a month ago and we are continuously learning how to use them. Here is a great video instruction on some basic kettlebell exercises.
Try this out at home if you have a kettlebell. If not come into Gold's Gym in downtown Pittsburgh and I'll give you a crash course lesson.