- 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
Leader of a six-person scientific expedition to Gamma Hydra IV and husband to Elaine Johnson. He was the last member of the team to die of radiation-induced old age at 29.