One thing iTunes is good for is singles and b-sides (when they have them, anyway). I got a weird version of "Mercy Mercy Me" by the Strokes and Eddie Vedder, and a cool Streets EP I didn't even know existed (All Got Our Runnins).

On the other hand, they still haven't fixed the download of "Has It Come to This?" that I bought. The first 2 seconds are cut off and it's insanely annoying.