I'm not just impressed by explosions and slow-mo cams. I like it when the FX team pays attention to detail.
Yesterday I was watching Wanted, the gunslinging movie starring Angelina Jolie, Common, and Mormon Freeman.
Forgetting everything else, the best effect was when the main guy was quitting his job and was walking out with the keyboard. He hit his 'friend' on the face and the keys from the keyboard move slowly towards the screen, with specks of blood from the guys mouth. I only noticed yesterday that the keys that flew off the keyboard were, F U C K Y O U.
Brilliant.