Kettlebells are excellent. But you have to USE them, and do it regularly.

Otherwise, they make a cool looking doorstop.

I highly recommend them. I know that the Russian Special Forces have used them for years, and now the US Special Forces is beginning to do the same.

I guess that speaks for itself.

FYI, a kettlebell is not just like a dumbbell or barbell, in that the center of gravity is off center, and way off center. Form is important in using one, or you could easily get bruised.

Also, never fight for space with a kettlebell. You will always lose, and go to the hospital, once you regain conciousness (if you do).

There are many excellent articles and forums on the net about them.
PM me if you want more info (I'm a strength and fitness trainer also - just not professionally).