Source: comicmix.com

6. Justice League: Crisis on Two Earths

Grant Morrison's Justice League is shockingly rad. It's just one all-star level masterpiece after the next. New World Order is awesome, DC One Million is one of the best event comics ever, and World War III reduces me to tears with every read. But the under-appreciated gem of his run (other than Ultramarine Corps) is JLA: Earth 2. It’s a reinvention of the classic Silver Age Earth 3 team, the Crime Syndicate, in true Morrison style.

Originally, Dwayne McDuffie and the Justice League Unlimited team wanted to adapt it into a feature called Justice League: Worlds Collide. Worlds Collide would have been a bridge movie that served as an epilogue for the Justice League animated series and a prologue for its follow-up, Justice League Unlimited.

It never came through"¦until the DC Animated team decided to take the ideas and re-shape them into a standalone movie. Crisis on Two Earths follows the Justice League and Crime Syndicate as they face off after the Alternate Earth version of Lex Luthor  summons the League for help.

Also, James Woods as Owlman is fantastic casting, I can't lie.