If you are a bike enthusiast or just a casual rider, you might want to check out The Bicycle Tutor which provides numerous bike repair video tutorials. Link.
These wood bikes are awesome. Looking at the comments on digg, it turns out these men are from the mountains in Baguio City, Philippines. Link to full image.
Here is a video of New York City bike messengers weaving in and out of traffic and squeezing between buses and people on crosswalks. You'll see some unbeliveable riding here -- not necessarily smart riding, but still cool.
Michael Killian has invented his own sideways bicycle:
Introducing a new bicycle invention by myself, Michael Killian. This bicycle is ridden forward and is balanced by using human Left to Right balance. This bicycle uses independant (non linked) Front and Rear steering. The ride is very wavy sort of like skiing with a capacity to drift to the right or left. The front and rear steering makes the bike much more maneuverable than a single steer bike. Your hands are by your side and you don't exert a lot of pull on the steering. Its sort of like riding a horse where you cannot lean on the reins but all body movements come out of your seat and saddle. The saddle is nessicarily a unicycle saddle (You would slip forward off a regular bike saddle).
Several other video clips of the bike in action can be found here.
If you are a bike enthusiast or just a casual rider, you might want to check out The Bicycle Tutor which provides numerous bike repair video tutorials. 
Here is a 
Michael Killian has invented his own sideways bicycle:
