Method Studios do VFX breakdowns of several scenes from their recent cinematic trailer for Halo 4.
Halo 4: Spartan Ops - Episode 10
Here's the tenth episode of Halo 4: Spartan Ops, created by Axis Animation.
Halo 4 Spartan Ops - Episode 2
Here is the second CG episode created for Halo 4's Spartan Ops.