- Star Trek: The Motion Picture
- Star Trek II: The Wrath of Khan
- Star Trek III: The Search for Spock
- Star Trek IV: The Voyage Home
- Star Trek V: The Final Frontier
- Star Trek VI: The Undiscovered Country
- Star Trek Generations
Planet whose odd transporter-blocking atmosphere allows beam-downs only once every eight years -- and caused the freak deflected-beam twinning of Commander Riker in 2362, while posted to the U.S.S. Potempkin.