Gorillaz - I used to not care too much for their self titled, but it's really been growing on me lately. I'd probably say Re-Hash, with honorable mentions going to Clint Eastwood, 5/4, Dracula, and Slow Country.
G-Sides - 12d3
Demon Days - El Manana, Dare or November Has Come
D-Sides - Don't Get Lost in Heaven Demo
Plastic Beach - On Melancholy Hill, after that probably To Binge, Some Kind of Nature and Superfast Jellyfish
The Fall - Revolving Doors or Parish of Space Dust
Humanz (based on what we've heard so far) - Andromeda or Saturnz Barz