The Doctor believes that he is really Lewis Zimmerman – the creator of his program.
2-05: Non Sequitur
Kim awakens in a parallel universe, one where he never boarded Voyager and is a rising star at Starfleet Headquarters.
2-01: The 37s
Voyager locates a group of people abducted from 1937 Earth, one of whom is Amelia Earhart.