Coverflow is a MAJOR annoyance on this thing, which otherwise I love. It makes no sense, you can shut of shake-to-shuffle, which is very hard to trigger inadvertently, whereas coverflow is popping on in every situation I use the thing. In the car, pops on setting it on the dash, in the pocket, pops on randomly and prevents me from changing the volume, and in the hand, pops on when changing position (say, to recline back in a chair).
It's a somewhat useful feature to have at all, but rarely one I'd use to actually pick an album.
If they wanted to improve that, how about letting me SEARCH FOR AN ARTIST as well as song title. I want all songs with "Tiff Lacey", but half come up b/c some have it in the title, and some in the artist. Goes along with that browsing compilations, artist name isn't displayed. Argh. Can fix that with a playlist composed on the computer, generally. Very small issue compared to the constant, unrelenting, activation of a rarely useful feature that disables a major control (volume). Blessed be that play/pause still functions.