Peter Gabriel, "In Your Eyes": very good for testing sibilance. On vinyl it will make the shortcomings of a mediocre cartridge pretty evident and separate the good from the awesome.
Pelican, "Glimmer": good for testing the depth and clarity of the low-end, particularly the bass notes toward the end.
Ry Cooder, 'Paris, Texas' soundtrack: great acoustic and slide album, will give the mids a chance to show what they can do.