Planet Hollywood

Planet Hollywood is a casino in the city of Las Vegas, Nevada.

Alternate reality
''In an alternate reality, a lone Wraith survivor spent time playing poker in a secret gambling den within the casino. It was there he was able to win several thousand dollars, but because fellow player John Sheppard grew suspicious of him, the Wraith attacked one of the other players, and fled, leaving the winnings behind. He was able to evade Sheppard after jumping from the roof of the building, and survive the fall.''

Behind the scenes
Planet Hollywood was one of the main locations used for filming on location in Vegas during the episode. This was according to Robert C. Cooper during the season five DVD special feature "Stargate Atlantis Goes To Vegas".