The heads of
Jon Stewart (of _"Daily Show with Jon Stewart, The" (1996)_ ), Apu (from
"The Simpsons" (1989)) and Eric Cartman (from
"South Park" (1997)) can be seen among the many unidentified heads in the head museum. Stewart and Cartman's heads serve as an homage to how this film was produced with the intention of it later being split up into 4 episode-segments and aired on Comedy Central instead of Fox, the home of Futurama in it's TV series form.
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