Long story short, I saw a director reference an easter egg in a release but can't find it listed anywhere and it is someething my kids are totally bugging me about. SO I need a fat easter egg site, or if someone knows how to access the original Justice League promo film hidden on a one the the discs (I don't know if it is in a box set or a single disc release) that'll work fine too!

The site I remember having the most stuff was this one. Good Luck.