I have never been good at things requiring spatial skills. I can finally read a map but that's about it. In wheelthown pottery, I could center it and thin the walls to get a great cylinder but could never get the shape I envisioned in my head into the clay. I can't do those questions on the SAT or IQ tests where you have to say which design on a flat paper will end up on top once the paper is folded into a box.
So I'm impressed by anyone who can.
Or anyone who can solve a Rubik's cube.
But I'm especially impressed by this guy. He takes one sheet of A4 paper, cuts it and folds it so that all the paper is still there, the flat part and the 3-D pop-up part are both amazing. This website has other projects of his too.