This is what it looks like when two teams of Diablo III players take each other on in that game's new PVP arena.
You can read all about the new PVP arenas in our original post on the news, fresh out of BlizzCon 2010 this morning. As we learned at the Diablo III gameplay panel this morning, the new Battle.net plays a huge part in the PVP battles, facilitating matchmaking for teams of like-minded and like skilled adventurers.
Blizzard's Jay Wilson explained that the team focused on team-based battles because there are just too many different player builds possible in Diablo III, so one-on-one balance would be next to impossible. They're still looking into implementing one-on-one duels for those of you who care not for balance.