I have a great 14-mile commute with several routes that I vary with my mood. I go through interesting urban neighborhoods with all sorts of architecture and people (I always get smiles from people on their porches), grand boulevards and monuments (I love to pass in front of the Supreme Court), through thickets of cherry trees in the spring, and down to a bike path that runs along a beautiful river. I end up in a nice historic town with my favorite independent coffee shop right there. And my cool, creative job is in a renovated old church with a bike rack in the lobby and a commuter shower on the second floor.
Oh, and my current project at work "forces" me to ride my bike around and take pictures of parks.
Perfect.