An appendix that gives some account of the "Pigskin Library" which he carried with him for daily reading in the heart of Africa is a surprising exposition of the wide range of his reading.
But on top of that, refinements abound, and gamers now expect all kinds of features and goodies in their pigskin games.
After you've done that, you can see how good of a place kicker you are, sending that pigskin through the uprights for the win.
But this year, NCAA Football '06 impressed me and now, with a portable chance for pigskin play, Madden '06 for the PSP offers a lot of fun for your handheld.
The first few seasons didn't really have real players or the pizazz that we've come to expect, but it's been 20 solid years of tossing around the old pigskin in a virtual fashion.