I decided it was time. Leave suggested inclusions in the comments, as well as what work(s) they rip off.

CRITERIA:
1. Inclusions should clearly reproduce in whole or in part elements (i.e., overall narrative vs. specific sequences) of a previous work (not a parallel project).
2. Inclusions should not be clearly acknowledged as remakes, adaptations, or projects otherwise derived from previous works.
3. Inclusions should be cynical in intent (i.e., profiteering off of an audience's unfamiliarity with the previous work). Homages or otherwise artistic reproductions do not qualify.

The default list order will be the order in which films are added. All list items are spoilered.