Ya, that's weird. From my own anecdotal experience, Denmark has the maybe highest per capita computer science PhDs in the world.
Pretty good for a country with half the population of New York I'd say.
Update: Seems DHH started RoR while studying at CBS.
Legos? That and crappy weather that makes staying inside a good idea:-)
I always played with "Legos" as a kid, so for me that's what they are.