Ok, I have downloaded and watched the X06 Mass Effect trailer, both on my PC and on Live.  In fact I have watched it several times.  The scene where Shepard grabed the alien (I don't know his name) and told him he had his orders was great!

Now,if I could only find a store willing to sell me a copy...  Guess Ishould wait till Bioware actually finishes the game before I go wait inline.