Jon Jackson (of LA Graphica fame) and Casey Sheehan have linked up like two autobots to become "Expo Cooperative".

This is one of the most impressive portfolio sites I have seen in a while. They do an amazing job of merging CSS/JS/AJAX/Flash and amazing design to build a flawless user experience. I can't wait to see what else these guys produce in the future.

Also, everyone should point their RSS readers at the research blog that they have set up (even though it looks like it hasn't been updated in a while).