STARGATE ATLANTIS S3 on DVD Tuesday! From the longest consecutively running sci-fi series ever, "Stargate SG-1", comes its thrilling spin-off, "Stargate: Atlantis" Season 3, splashing onto DVD on September 18 from MGM Home Entertainment. For the first time MGM is releasing the complete previous season of "Stargate: Atlantis" on DVD before the premiere of the next season allowing fans to catch up on their favorite episodes. Set in the lost city of Atlantis in the Pegasus Galaxy built millions of years ago by the most advanced race in the Stargate Universe, an adventurous expedition ensues, overflowing with intense battles, out-of-this-world visuals, amazing special effects, endearing characters and a two-time Emmy.