Woody Guthrie/This Land is your Land (ASCH vol. 1):  If you want one CD that has Woody's finest work, this is that CD.  The other volumes in the ASCH series are excellent as well (so if you are looking for a more complete picture of Woody's work, those following volumes are where to go) but vol. 1 gives me everything I want in a Guthrie collection.  Highly recommended.