YouTube user BrussPup makes some really impressive experiments that may twist a bit our minds. In his newest episode he plays with some anti-gravity toys. Well, they are magnets, but it looks damn cool when you make what he does. The extra mile that he works in order to make these things work give it that nice edge you want to see when a geek does magic.
The device shown here, Levitron Revolution, does not float any object, it only floats objects that have the magnetic disc in them. You can hide the device under the table and you will impress some chicks. Be sure of that.
If the above movie was cool, get ready for another demonstration. You will love it. It can be found on Brusspup.com.