A few nice business card size images I found:
Flip Mino
Image by Marc van der Chijs
Excellent video quality at a size slightly bigger than a business card (Note: I edited out my phone number :-)
Gatt, Schüter & Zawnoff
Image by mynameisrichard
Another contribution to Malarkey's Hardboiled business card game. Points awarded if you can guess the hardware illustrated.
The (mis)quote is taken from the film Ronin. May our invisible friends in the sky forever preserve Sean Bean.
EDIT: Tweaked the size of the revolver down a gnats. And changed name Gunn to Schüter.
stuffandnonsense.co.uk/blog/about/could_you_be_a_dick/
GoodCard10 Rendering
Image by Travis Goodspeed
A neighborly, MSP430-based smart card emulator. This is standard size, but of a thickness less than that of a real card. Might make a good business card, but only for very neighborly business.



