Crisis On Infinite Earths

For Oliver.

You. Have failed. This universe.

Because even in the darkest times, hope shines through.

The beginning of the end.

It's all happening!

So long, old friend.

Being bad makes Barry feel bad. And dry heave.

This feels like a really bad idea. 

Will Warner Bros lean on what makes DC Comics unique - alternate, crossable Earths? Geoff Johns hints that they could.