actually Lego ARE hard to counterfeit! They are made to such insane tolerances (I think the level is within .003 of an inch). If you've ever bought a set of knock-off blocks you can tell right away they aren't the same.

This is an old chestnut, I know, but *please* "Lego" is a plural already. There is no such thing as "Legos".

Henry Lim or Eric Harshbarger would be millionares under
this scheme.

http://www.henrylim.org/LEGOSculptures.html

http://www.ericharshbarger.org/lego/index.html