I've always loved Marc Jacobs mouse flats (and I even have a pair myself! I really should show them off here at some point. Meanwhile, you can see pics of them here), and I love all the new versions of them that keep popping up on a regular basis. One of the coolest versions of this classic flat, however, is the studded version:
The studded details just make them so cool, edgy and unusual compared to the regular Marc Jacobs flats.
(You can get these over at Zappos, here and here)