* DigitalPiracyIsEvil: The movie was leaked online a full two-weeks before its intended DVD release, available for download on at least two separate file-sharing websites on July 13, 2010. Didn't stop it from being one of the best selling of the DC series films, though.
* FakeAmerican: Canadian-born Creator/BruceGreenwood as Batman.
* PlayingAgainstType: JohnDiMaggio as SelfDemonstrating/TheJoker.
* WhatCouldHaveBeen: The film was originally going to be R-rated, but Warner Animation convinced the staff to tone it down to PG-13. The preview of the movie included with ''WesternAnimation/JusticeLeagueCrisisOnTwoEarths'' contains clips of the R-rated version of [[spoiler:Joker killing Jason]], which are noticeably bloodier and more violent than the final product.