If it were just about good screen fonts, Verdana would be the way to go. :-) (Am actually liking Verdana more and more printed, too--but it's real strength is still on screen.)

Actually, a lot of books are just being done in Times New Roman these days, and no one seems to care.

Now that makes me a little grumpy. It's not that good a font, to my eye--and these days, it looks like someone just dashed things in it off on their computer, unless it's done really well.