ABC3D is a pop-up book featuring the alphabet. Each letter is displayed in a creative way. I watched the video two times. I really liked the music too. They're available for pre-order on Amazon for $20, which isn't too bad. Unfortunately you can't use it to teach your children the alphabet because then they'll never be able to recognize letters in 2D.
Popup by Marion Bataille [fubiz]
Thanks to Romain, who can spell anyone's ass off, for the tip