Great question, Vienna.
I don't own an iPad, but I do have an iPhone and I have to admit that
I've been disappointed in most of the "print" materials for the device.
The NY Times app kind of stinks (though I've heard the one for iPad is
breathtakingly amazing), The Onion is OK and Epicurious--ick. Even when
using my friend's iPad to research project 3, I was surprised by the
simple, lackluster designs of the ebooks I looked at.
However, I'm continuously impressed by the applications for radio. Though mobile devices damaged print, they seem to have revived radio. For example the applications for Pandora, Spotify and my personal favorite, NPR. I was not really a fan of NPR until I had the app. Now, I can listen to programs of my choice (or only parts of programs) any time I want while avoiding commercials, Marketplace and Pledge Week. I can even listen to the NPR station from my hometown in New Hampshire if I want to. This app is really a commuter's best friend and I can't say enough good things about it.