(written from a Production point of view)
Sara Hart is an actress who portrayed an Excelsior officer in the Star Trek: Voyager episode "Flashback". As a background performer she received no credit for her appearance and was identified by the name tag of her costume which was sold off on the It's A Wrap! sale and auction on eBay. 
Hart performed stunts in the 2008 horror comedy Reel Zombies.