The quality of the video is way better that most I’ve seen. You need to wait a bit for the multiplayer gameplay to start (at 3:08). The party is complete with all three Diablo 3 characters: Wizard, Barbarian and Witch Doctor.

The only complaint was that the screen was a bit overwhelmed with all the special effects:

The only negative thing we could see was the messy screens you’d get when playing in a party. If you have a Witch Doctor in your group casting Locust Swarm, and a ton of enemies are massing around your group, you’ll start frantically clicking at any and everything on screen.

Check out the Skeleton King fight at the end! I’m still not sure if the Wizard managed to kill it… I guess not.