Their new design’s use of BPReplay is a good demonstration of a high-traffic site using @font-face. A happy coincidence as I continue looking for web font resources.

(Edit: And they unplugged it on day 2. BPRelay Bold was getting a lot of hate. In the comments there were some legitimate complaints about it not rendering well at smaller sizes (web fonts rarely have the same hinting advantages as native fonts) and consuming extra bandwidth to load.)