Just wanted to add a quick note.
In my last post, I poo-pooed those moaning and crying about the lack of multitasking. And, in general, I think my criticism is valid. Most people want multitasking just to say they have multitasking, not because it will actually improve or affect the experience of using the device at all.
However, there is one edge case that is rather important to some people. You cannot listen to Pandora (or similar services) and use other apps at the same time.
For me, it's not a big deal. I like Pandora, and I find this occasionally irritating. But, I have a rather large library on iTunes (the "My Favorites" playlist has nearly 24 hours of music in it alone), and I've invested a lot of time organizing playlists for different moods. And Apple's built in iPod app multitasks just fine.
But, if you're a big Pandora user, this could be a deal killer.