For me, at least, it's harder to gauge amazement than shock, hilarity, or even nostalgia. Still, under my own undefinable (and for all purposes, tentative) guidelines, I lost to CE7 and Weegee. And maybe PL, penguinwizard, and Glorb (primarily the latter). And yes, dc, Hubble's Deepest Field is incredibly amazing, but Iearned about it a while back. To be honest, I don't amaze all that easily, so I actually tend to determine relative amazement by what seems... the least mundane.