coverflow because I've got way too much music to flip through while I'm driving. I'm organized mostly by playlists that I set up so i can shuffle things I like without having to be too distracted while I'm driving. So Artist/Album and Favorites (now that I know how to export my Playlists for Ice3) are exactly the way I like to find my music.
I have to agree with this - I've become accustomed to iTunes and like the navigation structure. A Front Row-type clone that can use a touchscreen would be almost perfect.A lot of my suggestions may sound like iTunes, but that's because iTunes works well and seems to meet most peoples needs. I understand if that's not where you want this front end to go, but that's just my 2 cents.