10K intake paperwork shows his name as ten thousand and his address is Cabin in the Woods. The Cabin in the Woods (2011) is horror movie that has zombies in it also.
Doc's intake paperwork shows his date of birth is 4/20/69, which is not his true D.O.B. it's more of a reference to the character's cannabis use, April 20 is also known as "Weed Day" which can be traced back to 1971.
Darwin is a reference to Charles Darwin's Theory of Natural Selection, or the survival of the fittest.
Lydia Hearst (Great-Granddaughter of newspaper magnate William Randolph Hearst) who plays Pandora, is the wife of Chris Hardwick, the host of Talking Dead (2011), the companion show of The Walking Dead (2010) which is more of a character study of the zombie apocalypse as oppose to a dark comedy which is Z Nation (2014)