CorkChop asks about the orientation of the Xbox 360

"Did Microsoft want to make the Xbox 360 more like the new PS2 which can sit vertically?  Did they want to make the new Xbox appear more like a computer, I mean, the case is now white instead of black like the old Xbox so it sort of looks like a PC.  Or better yet, did they add the 90 degree pivot option just to screw with people like me? 

I am going for that last one because in the promo pictures on the Microsoft Xbox website, the Xbox appears to be either floating or magically standing on one corner, adding a third possible orientation if you happen to live on the International Space Station."