This really, really excites me.
http://www.eurogamer.net/articles/2012-08-13-why-gearbox-created-a-borderlands-2-boss-so-tough-its-nearly-invincible
http://www.eurogamer.net/articles/2012-08-13-why-gearbox-created-a-borderlands-2-boss-so-tough-its-nearly-invincible