It's aligned so that if you open up the deck and take them out, while looking at the back of the box, the backs are facing you. So, if you were looking at the front of the deck, the faces would be looking at you from behind the tuckbox.
You can see this by looking at White Centurions or Ramblers - the little window shows the back of the cards, and it's on the back of the box.
For some reason, I always swap it around so that when I open up a deck, the Joker is looking at me. I don't know why I do it, I just do. xD