has added the complete episode 1 of Welcome to the NHK to their free page. You can see it here
You can still check out the official trailers for their other releases including Pumpkin Scissors, Gantz, Red Garden, Xenosaga, Utawarerumono, Air, Innocent Venus, 009-1 and more.
And yes, this is from ADV so it is the dubbed version. No arguments about sub vs. dub needed or wanted.