Moo.com

For those of you who don't already know about them, Moo.com is the place to go for some adorably well made business cards.  You can create your business card using your own personal artwork, or choose from the many designs that they have available.  Their business cards come in different sizes as well, regular and mini sized, the mini being half the size of a regular business card.  I went with the mini size and they came out beautifully!