I just took part in an epic battle between the Brotherhood Of Steel (I was fighting on their side) and Super Mutants in the middle of downtown DC. Then, just when I thought the battle was over, shit got intense and a massive Mutant Behemoth bastard just came out of nowhere and almost demolished me.
I took a couple pictures, I should be able to post them soon.
I totally forgot Metal Gear Online, which has awesome battles.
Here's a picture right before I got squished (I died the first time I fought this guy).