The beer featured in the film, Mudders Light, is a reference to Mudder's Milk from the Firefly episode "Jaynestown".
Brandon not being naked in the shower pays homage to Arrested Development's "never nude".
The voice of Cybertransexual Woman Unit Six Nine Six Nine was inspired by ROB 64 from Star Fox 64.
Before the title sequence, the band references the lyrics of "Epic" by Faith No More in their dialogue when answering what "it" is.
The Doctor Who villains spoofed include the Empty Child, the Great Intelligence, a Dalek, and of course the Master.