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...
Halo 2's Megg
Level: Cairo Station
At the last part of the level where you have to secure the bomb (scene: return to sender), you have to be on legendary with no co-op. You have to have the Thunderstorm Skull (no other skulls) active and it must be active before the 1st checkpoint. You cant die, or even lose 100% of shields, you cant revert or quit while trying to find it. If succeeded you will hear this message being broadcasted over the intercom: "Paging Megg, please report to the red courtesy phone. Meg to the red courtesy phone.".