I should write a Perl script that uses the iTunes COM interface and rates each album based on the average rating of its tracks. Maybe I could optionally have it ignore discs with less than 4 tracks, or discs with gaps in the track numbers, in order to only rate complete discs.
I'm betting Billy Joel's Glass Houses would be pretty high on the list, what with it averaging 4.7 stars per track.
Also: Dire Straits' Making Movies? Even better, at 33/7 = about 4.714 stars per track.