MyCard

That takes your Contact info and displays it as a QR Code. It will also make a Widget of the QR Code for easy reference.

Latest Release:
1. Requires 1.6+
2. Its smaller and seems faster.
3. Tested on G1, N1, EVO, Verizon Droid
4. It will try to find you based on your Google Account.
5. Better use of Contacts