Beyblade: Metal Fusion - Battle Fortress is releasing tomorrow for the Nintendo Wii.  After feverish research I have found that a Beyblade is not, in fact, a mythical blade used to smite movies, endowing them with 100% more explosions but with 1000% less awesome.  That's the Bay-Blade, and that's something entirely different.  Beyblades are "highly powerful spinning tops... which are enchanted with magical spirits."  I'm going to go out on a limb here and say that they just might be Japanese in origin.