My new favorite bike rack
All other things being equal that probably aren't equal (price, space, etc), I think this bike rack is my new favorite.
It seems optimized for "the Sheldon Method" of locking -- note that when the rear tire is placed in the tire guide, the wheel is lined up perfectly for locking using a mini U lock. You can also lock through the seat tube. With this bike, in fact, I can slide the Kryptonite Mini through both the wheel and the seat tube and that bike rack.
Note also that the wheel guide is positioned such that the drive side is away from the post.
This is at San Jose City Hall. The new Monterey Bay National Marine Sanctuary Exploration Center in Santa Cruz also uses this style of bike racks.