I just downloaded "A Brief History of the Universe" by Steven Hawking from iTunes. It's roughly a 50 megabyte download.

I have a 2 gig thumbdrive in my backpack. At an average of 50 megs apiece, I could carry roughly fourty point nine six books in my pocket.

That's cool.

[edit: my math was slightly off. I was combining bytes and megabytes, to disastrous effect.]

Exit, stage left. Sparks