I can't wait to try the Drow race. In my current D&D campaign, I play a Drow Warlock. Freaking love playing her. I really enjoy the Drow society. Women being in power, and being "mysterious" is really cool.
My plans for the beta weekend would be leveling with friends, and doing dungeons. I would explore the Foundry with friends and create dungeons based on our current D&D 4E campaigns. I would explore the crafting and PvP systems.