River is a character from the cult favorite Firefly. And I know this because it's one of my favorite shows EVER. Actually, now that I think about it, Willow is a character from one of Whedon's other cult classics, Buffy The Vampire Slayer.
I can't hear Bristol without automatically thinking "Palin."
I was thinking exactly the same things! (Major JW fans over here... actually seriously considering Malcom if this babe is a boy )