Paul Geraskin presents a short but nicely made video, with battles in different times.
Here is my small video which i made with Blender and Natron.
All was rendered in Cycles except the explosion. Blender is really great 3d application. But i found that it's pretty difficult to compose complex huge scenes when we have only 20 layers. And using groups is not the the best solution. I hope the devs will add something like SubLayers to have possibility to make big huge scenes. But all other stuff in blender is the best! I love blender!
This is great opensource compositor. It grows really quickly. It's not stable yet but it has big potential power like Nuke. And Natron will be production standart soon. I hope all Blender artists will use Natron and help this project to be much better and stable. Just go to their github and report bugs. During my composing i found about 15-20 bugs in Natron. And Natron developers fixed all these bugs during 1-3 hours. They are really fast guys. :) They are cool!