Star Trek: Voyager: Season 7, Episode 18

7 - 18: Human Error

When Seven of Nine tries to perfect her social skills on the holodeck, she experiences the breadth of human emotions while researching relationships. She soon overwhelms her Borg implants as her hobby quickly becomes an obsession. This leads her to neglect her duties, placing Voyager in great danger when it accidentally wanders into an interstellar firing range.