I just watched Mystery Spot again, and was struck by (SPOILER!) Sam's anger after Dean dies on Wednesday. I had to explore it. Please review, and then off to my website where I review reviews.
He has never known anger like this. The rage is so strong, so furious, that it pulses in his chest like a giant heart, each beat building the pressure until he feels like he will explode, showering everyone with fragments of his hate. It makes him dizzy sometimes, his vision narrowing to a pinpoint of light as he fights to swallow it down, to press the anger deep into the pit of his stomach where he can contain it, conceal it. Save it.
Every day it grows, by inches, by centimeters, swelling to fill him, to color every sight and sound and smell. It grows and expands, pushing out every other emotion. It kills guilt, kills sadness, kills pain, kills loneliness. None of those feelings stand a chance when compared to the depth of his fury.
Sometimes he can barely breathe, as bitterness becomes his very air, pulsing and searing in his lungs, screaming for release, for blood. And only blood will suffice, only blood will quell the wrath. Blood for blood, he will bleed the evil dry, will watch the life-light leave eye after eye. Every death revenges one of Dean's, and he will kill and kill until he reaches the One Who Really Matters. And woe betide anyone gets in his way, for he will kill them too.
There will be blood like a river, and some tiny part of Sam fears that he will drown. But that tiny part is soon swept away by the power of the rage. And then the rage is all that is left.