1) Mistral blowing Raiden a kiss to where Raiden is very shocked, and then in a comedic fashion...Doktor codecs raiden asking him why his Heart Rate skyrocketed and Raiden terminates the call LOL
2) The whole scene in front of the World Marshall HQ Building with Monsoon. Purely epic especially with the rain falling.
3) Blade Wolf refusing to shake Raiden's hand back and then Raiden glowing red because of him killing Sam. Pretty funny scene.
4) All of the scenes with Armstrong in the final part of the game.
Armstrong was a hilarous final villain at times. Doesn't get old considering how he beat the living sh1t out of raiden. His fighting style was good old College Football mixed with Goldberg from WCW :-p