Batman beating the living crap out of Superman in the Dark Knight Returns.
John Constantine giving the devil the middle finger and saying "Up Yours" in Hellblazer.
In the Sandman where a man peals away his stomach and a flock of crows fly out.
The Swamp Thing, after we all thought he was dead, regenerating on a far away planet. The comic that follows is one of my favourite storys from Swampy.
Dr Manhattan on Mars telling his origin story.
The Ultimates, where Captain America has an alien by the throat. The alien tells him to surrender. One of the greatest lines of all time follows. "Surrender? SURRENDER!"
[spoiler/][img/]http://i3.photobucket.com/albums/y99/ianinozzie/UltimateCaptainAmerica.jpg[/img][/spoiler]
Theres also a moment in a recent issue of the Boys which was so disgusting and hilarious that I don't think I will every forget it. Warning, it is truly, truly disgusting.
[spoiler/] Wee Hughie (who looks like Simon Pegg) takes the blond girl (AKA Star Light) to his apartment, where she spends the night. Wee Hughie gets down on her. In the morning, Butcher and Mother Milk come to pick him up for the work. Butcher rings the door bell. Hughie gets up, in his underwear, his back to us, and walks to the door. He opens the door and Butcher simple stars at him with a shocked expression. He then chuckles and tells Hughie to meet him at the car. Puzzled, Hughie walks into the bath room and looks in the mirror.
Theres a circle of blood on his upper lip and all over his chin. Hughie puts his head against the wall and says "Oh no" while in the next room Star Light lifts up her covers saying "Umm...I think there's been a bit of a timing issue"
The next scene is Hughie sat with his arms crossed in the back of the car, mother milk and butcher on either side of him. As soon as he tries to speak, they burst out laughing. [/spoiler]
I literally had to just put down the book, close my eyes and giggle half to death for about 20 minutes after that scene. Seriously, if you love violence and disgusting humor in a clever comic, pick up "the Boys". Its by the guy who wrote Preacher and invented the Punisher.