Here’s something nerdy, but fun. David Desandro one day wondered if it would be possible to create a typeface using only CSS. And then he did it. It’s a nice mixture of span’s that create the inner workings of the typeface using border-radius and other goodies to perform this magic. It also looks pretty cool, in a chic kind of way. If the thought of this gives you a weird smirk on your face (like, you know, the kind of smirk I’ve got right now) I suggest you head over to his site and inspect the hell out of that code.
Update: Perhaps even cooler, how about The Opera Logo?