In the first cutscene, where you are given the options to toggle the blood gore 
and swearing, just before Eddie says the line that leads to the option of 
turning on or off swearing, he sees one of the band members dancing on a very 
shaky ledge. While that band member is dancing on that ledge, he will be 
chanting a song that was originally done in Psychonauts by some kids in a few 
parts, but most notably by Raz himself in the level where you have to fight four 
wrestlers to get a card. At the end of each match after they were defeated, Raz 
did the same dance and chant song.

The headbanger that wears the goggles at all the Death Rack missions sounds 
identical to Raz, but slightly deeper.