Here is an interesting comparison of Cortana over the course of the 4 halo games:
PTesh adds his dulcet prepubescent tones over the top of one of the new trailers for weapons...
Try upgrading your browser to Google chrome (you wont regret it). There is probably an IE...
Position Indicator Funnies
There are probably hundreds of these scattered around the game, but if you go into certain locations in multiplayer, the little indicator that shows you where you are sometimes displays funny things. The best example is on powerhouse. If you jump off the edge of the cliff, your little position indicator will read "Vaya con Dios!", meaning "Go with god!".