Turns out Karen Gillan isn't the only sci-fi superactress to play Pond.
Back in 2011, Firefly alum Jewel Staite guest-starred in the season-seven Supernatural episode titled "The Girl Next Door." She played a childhood friend of Sam Winchester who may have been eating human brains. We won't spoil the rest of the episode for you, but it is worth noting that Staite's character bore the same name as the 11th Doctor's fiery ginger companion.
More little-known sci-fi fact
Though the characters are very different, it is interesting that Supernatural's writers chose to pay homage to a Doctor Who character in such an obvious way. Perhaps next we'll be getting characters named Rose Tyler or Martha Jones. Who knows? We might even get another Captain Jack Harkness if we wait long enough.
And check out these other little-known sci-fi facts:
Toshiro Mifune turned down Vader role
How a mime saved the original RoboCop
Lucas originally wanted FOUR trilogies
Why Soylent Green was called Soylent Green
R2-D2 appeared in Raiders of the Lost Ark
Gandalf wasn't going to be named Gandalf
A computer glitch almost killed Toy Story 2
The incredibly filthy joke hidden in Willy Wonka
Kirk wasn't Wrath of Khan's only father
The accident that gave us the lightsaber
Scully stood on a box to film X-Files
Kirk's Trek hot rod was Catwoman's, too
James Cameron played the Alien Queen
Why HAL 9000 sang 'Daisy' in 2001
What inspired Alien chestburster scene
3 ways George Lucas' wife saved Star Wars
The brawl that got Mel Gibson the Mad Max gig
James Doohan was shot six times on D-Day
Tolkien killed a Beatles LOTR movie
How Ghostbusters pissed off Isaac Asimov
The lyrics to Star Trek's opening theme
The famous "Wilhelm scream"
(Via Reddit)