I want one! I found out about this totally awesome site (From this Wired Article), United Nuclear, they sell all kinds of cool scientific stuff. This is what they say about Supermagnets (Scroll Down on That Page to Supermagnets).

If you really need unbelievably powerful magnets, here they are. Uses include magnetic steering of nuclear particles in accelerators, levitation devices, magnetic beam amplifiers, scrap iron separators, etc. Beware - you must think ahead when moving these magnets. If carrying one into another room, carefully plan the route you will be taking. Computers & monitors will be affected in an entire room. Loose metallic objects and other magnets may become airborne and fly considerable distances - and at great speed - to attach themselves to this magnet. If you get caught in between the two, you can get injured. Two of these magnets close together can create an almost unbelievable magnetic field that can be very dangerous. Of all the unique items we offer for sale, we consider these items the most dangerous of all. Our normal packing & shipping personnel refuse to package these magnets - our engineers have to do it. This is no joke and we cannot stress it strongly enough - that you must be extremely careful - and know what you’re doing with these magnets. Take Note: Two Super magnets can very easily get out of control and break fingers and even your arm if opposing poles fly at each other. If working with multiple Supermagnets, always handle one magnet at a time, secure it, then proceed to the next magnet.