I've always seen pictures of the chewing gum shoe floating around and then by using stumbleupon (I only started using it last week or so) I came upon a whole bunch of them! Some of them are just so fun to look at! They're designed by Kobi Levi who attended Bezalel Academy of Art & Design in Jerusalem (on a side note I really want to go to Tel Aviv)!
"Levi takes everyday objects and incorporates them into a creative pair of high heels."
You see more here and read the article.