I just found out from New Belgium's Facebook page that maps.google.com now has the ability (in beta right now) to map a bike route for you.
I've actually been wondering (actually even mentioned it out loud to some people) when google would add this functionality.
Here are directions I just did. These will take me from around my house to around where I will be working on a daily basis in a couple of weeks.
As I mentioned, the bike directions are in beta. Who knows how good they are, but I'll be using them. I think this is awesome! It is about time!