Whoo! I didn't realize the trailer was online now. Thanks for posting the link.
Just as DarkHorizon said, I've been looking forward to this since Joss announced it. It sounds and looks like it'll be quite a bit of fun.
Yeah, same here. I didn't realise that it was being released this month, I just went to the website to see if there was any news.
If you haven't already, you should read the master plan. The 3 parts will be up till Sunday night, then a bit later they'll become paid downloads, then sometime in the future there will be a DVD release with extras. He says all that and more, but in a more Joss-like way.