Arceus is the only Pokemon with the ability to create an honest-to-goodness egg from which a level-one Dialga, Palkia, or Giratina may be hatched. The spectacle that follows in the Japanese version of Pokemon Heart Gold and Soul Silver features some odd fanfare to accompany your choice, depicting strange, realistic backgrounds of what appear to be blood cells and other patterns with fractals and other designs superimposed over them. Picture an evolution, but on acid. Yeah. Take all of that in and tell us you weren't trying to figure out what was going on in the developers' heads at that point.