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...
Penance Switch for GRD Doll
When the GRD Doll was first found people had to glitch there way to get to the Penance GRD Doll. Later discovered was another technique that showed another easy way to receive the GRD Doll without Glitching the map.
For that we thank you guys! This is the second Egg post about the GRD Dolls and this one is a hidden why to receive it so enjoy! :)
There is also another Easter Egg below in the list showing the same thing along with three other Eggs in the same map, go check 'em out!
And don't forget, good Hunting! ;)