The Colour and the Shape is the best, but There Is Nothing Left to Lose isn't that far behind!!
There are also some string quartet tributes to the Foos which is an album of Foos songs, but played by a string quartet. It has songs from all of the albums. It's a lot better than it sounds =)
Oo... should probably add something to that. They're not really that much good unless you know which songs they are... Probably best to have a good listen to the other albums first =)