iTunes 9.1's Album View provides an easy way to sort your universal binaries (iPhone, iPod touch, and iPad) apps from your iPhone and iPod touch only, and iPad only apps by separating them out in just that order.
If you're not sure how to get to Album View, it's the middle button of the three view icons immediately left of the search box, the one that looks like two rows of three squares. The icon to the left of it is List View, to the right of it is CoverFlow. See the picture above.
It's a small touch but a nice one for those of us who fret about just such organization minutia.