Don't forget the clinic where they go get checked during "Dethhelth": Dr. Necrophagist
Discussing how their previous chef "blow his brain in" and how it made "a good album cover" is a reference to metal band Mayhem; lead singer Per Yngve Ohlin committed suicide with a shotgun blast to his head, and the band used a photo of his body in situ as the cover for the bootleg album "Dawn of the Black Hearts".
Nathan calls out "Rotten Body Landslide", "Every Bone Broken" chicken and "Hammer Smashed Face" over the store intercom. All are Cannibal Corpse song titles.
Toki's underwater performance in Dethwater is awfully remeniscent of Ringo Starr's "Octopus' Garden".
Timmy Razzle from Razzle Sticks in Snakes n' Barrels II is a possible reference to Nicholas "Razzle" Dingley, the drummer of Hanoi Rocks from 1982 until he died in a car crash in 1984.
The "Iced Earth Community Skating" rink in Tributeklok.
St. Necrophagist's, the hospital in Dethhealth.
In Fatherklok, the Swedish bar where Skwisgaar goes with his new stepdad is called Malmsteen's.
In Dethhealth, during a Disney Acid Sequence, the anthromorphic cat can be seen doing both the moonwalk and the thriller dance among others, in a possible homage to the recently deceased Michael Jackson.
In Dethkids, towards the end of Toki's Disney Acid Sequence, when Pickles is shown amassing a large amount of balloons around himself and the resulting cluster rolling away, some could not help but think of Katamari Damacy.
This is a literal Shout-Out to American death metal band Suffocation being charged in England in the early 1990s with their music being obscene and vulgar. The entire case hinged on the fact of whether or not the songs could 'damage' the youth. Their defense attorney's argument is VERBATIM what Nathan regurgitates in the response.