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...
Level: Mombasa Streets
While roaming throughout the Mombasa streets, you'll occasionally run into various wall graffiti. One sign stands out more than all others and it's one with an image of the earth and a white object above it. With Destiny now revealed by Bungie, we know this is a nod towards their game.