Stargate: Atlantis's premiere aired here Friday on Sci Fi. Brilliant. Brilliant. This holds a lot of potential, and from the looks of it, they got off on the right foot.
Here are some teaser trailers:
http://www.sg1archive.com/teasers/atlantis_promo.html
http://www.sg1archive.com/teasers/atlantis_trailer.html
http://www.sg1archive.com/teasers/atlantis_101.html
New gate.
Closeup:
Wraith guy: