Wait, what were you saying about Kinder surprise eggs, drtooth? I didn't realise that that's not a US-wide thing. I love them so much, but it's a pain to put the toy together! Hahaha.
Well, 2 reasons. One, that whole Disney Magic thing (a similar concept by Nestle in the late 90's) dashed all hope of having a toy inside chocolate. Apparently kids who don't realise there is a toy inside will clearly choke on it. And since one did, they pulled them off the market. And 2, they are a European thing, and I think I've only seen them in an import store.
Personally, I only got a few, since I was trying to get the Asterix the Gaul toys. I got Asterix himself on the first try... but subsequent ones gave me a car and a Jelly fish thing. They're cool, but I really had my heart set on Asterix characters.
They do have a simialr (exact same kinda chocolate too) thing in Japan, and I found those at an Asian grocer. only these have Super Mario characters in them.