My favorite bit of cycling back from work is freewheeling down the hill on 32nd Ave E. It's quite steep so you can go pretty fast but not so dangerous that you have to use the brakes. If its dark out then there is also an interesting lighting effect - as you pass under the streetlights your shadows seem to sneak up behind you and then zoom past before fading in the glow of the next light. It freaked me out a little when I first noticed it and didn't realize what it was.