iTunes added the Stargate franchise to their online store. Each pilot available for free download.
Stargate SG-1: Children of the Gods (SD) 1hr 36 min Stargate Atlantis: Rising Pts. 1&2 (HD) 1hr 28 min Stargage SGU: Air, Pt. 1 (HD) 43 min (Don't know why they didn't bundle Air Pt. 2 with the offer.)