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...
Master Chief in Cryo Tube
Level: Pillar of Autumn
During the cutscene right after you control the giant gun that blasts the dropships and banshees, if you pan with your right thumbstick to the right (hold down your right stick, to the right direction), there is a shot from within a hangar where you can pan and you can spot master chief in a cryo tube.