Wallets for Geeks
The blog productdose.com lists the top ten geek wallets. In my opinion, the most useful one is the CEO Billfold Wallet (aka: nano wallet) that has a special pocket designed to hold the iPod nano. The wallet has the look of a typical bifold leather wallet.
If you're looking for a very strong money clip, the Sammy Titanium Wallet may be for you.
If you want something even more geekish than a duct tape wallet, the dot matrix wallet may be for you. It is a tri-fold wallet that looks like it's made out of a dot matrix printout. The printout lists the first 3,000 digits of pi. It's actually made out of a moisture resistant material rather than dot matrix paper.