Nice one, more innovative business cards please! Come on, Its the 21st century, we can do better :)
I for one would like a business card that "phones home". Ex: i leave a bunch of my cards at a convention booth, by the end of the day its gone. When a person with my bizcard takes it to his/her office, my card "phones home" through a wifi connection, telling me which company is interested in my product... That actually sounded better in my head... :P Anyway, the diving card, very nice simple and fun idea!

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Ads are boring 99 times out of 100.
Boring ads still sell.
Why?