There's apparently a huge amount of YouTubers putting in a lot of effort in coming up with movie trailers they desire to see in the upcoming movie bill. There's one good way for movie goers to drop loud hints to movie makers out there of what they want to watch. I've seen a couple already, including an unexpected Voltron trailer. But I think Knightfall182's 'Justice League of America' trailer is one of the best efforts in movie editing I've come across so far.
And a Joker sketch I've as yet to add color to.