The Halo Reach Beta is upon us, at least the 3733 of us I saw enjoying early access to the Xbox 360 beta/promotion/multiplayer-tease that gets wider release next week. I shot video of how it begins. Warning: kinda shaky.
If you can stomach this video, you will learn what it's like to boot up the Halo: Reach beta and (actually interesting!) the four social settings you can apply to this: Chattiness (chatty/quiet/no preference), Motivation (winning/good time/no pref); Teamwork (team player/lone wolf/ no pref); Tone (rowdy/polite/ no pref.)
Hope that gives you a little insight. We'll have more on the actual gameplay in the near future.