- 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
Young attractive holographic woman in the Fair Haven program who was destined to wed a jealous pig farmer. While on a date with Harry Kim, O'Halloran was turned into a cow by Tom Paris.