It's a Doctor Who reference to the episode “Blink”, which introduces a villain race of statues that can move, but only when unobserved.
Incoherent snippets of dialogue seen on a DVD turns out to be half of a conversation being had with a specific viewer in the future, a transcript of which goes back in time.
I think it's a pretty old idea (things which you can't look at, or which can't look at you, are certainly _very_ old mythological ideas), but... maybe? SCP showed up at about the same time as the first weeping angels Dr Who episodes.
The SCP page itself was created on 2008-07-25, while the episode aired on 2007-06-09, so it looks like the BBC was more like a year prior.