If you like detail in your images then this video is for you. Check out this quick video of 2.3 gigapixel image being played with in photoshop. You can view the full file here and you can easily create images of this size yourself with a Giga Pan EPIC Pro.
https://www.youtube.com/watch?v=KPK9FCBhV-Y
That's incredible!
Think they got a model release form signed?