I happened to stumble upon an interesting bike advocacy site: peopleforbikes.org, and on their blog, they've got a great post about Velo-City 2010, the world's largest bike advocacy and planning conference, which took place in Copenhagen, Denmark. Talk about an amazing city for riding bikes. Definitely check out the blog post. I love their system of sidewalk/bike lanes/car lanes. And talk about strong goals--their goal is to have 50% of all travel in the city done by bike. I sure would love to see Boston move farther in that direction. And now I want to visit Copenhagen in a serious way.
There's also this cool video about Copenhagen and bikes:
http://www.streetfilms.org/cycling-copenhagen-through-north-american-eyes/