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...
343 Guilty Spark Visits
Level: Installation 04 (Fire Fight)
On the new fire fight level Installation 04 if you go into one of the small building structures with the Ammo and Health Pack there's a window were the 343 Guilty Spark will occastionaly fly by. We kept getting requests for this but no video evidence, but at last here is the only video of this Easter Egg on You Tube so far so please mind the quality but enjoy! :)