1.in the hospital bed scene with the mouse skull (Mickey, nooo!) there is
a picture with the mad scientist from the 1930's Mickey cartoon The
Mad Doctor as well as one with Ms. Herman (which is knocked down when Roger
enters the room).
2. When Roger is being rushed through those doors, the doors say many "-ology"
terms (like paliontology, zoology, psychology) before hitting the final one
which says "Burbank" on it.
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Submitted by eutychus