This is a quick and easy technique, and is quite fun once you get the hang of it.
The most annoying part of this instructable was getting the camera to fire on its own while I was in a good position. I couldn't get a good view of the cards actually shuffling, but this should be good enough. . . Right?
Step 1: Cut
This is your basic deck. It has a fine finish, has a nice checkerboard design, and was bought from a second hand store. This little deck can be used for a multitude of things -- from magic tricks to fending off boogeymen -- but the bridge is just a simple trick with the thumbs. So don't kill people with them -- shuffle the bridge.
Cut the deck in half. You do that by pulling one half of the deck with your other hand. WHOA! Easy, right? Next.