How about:
Big Band of Brothers, (Jazz versions of Allman Bros tunes)
Moody Bluegrass, Vol 1 and 2
Great Ceasar's Ghost: What's Done is Done (mostly Allman Bros covers)
Jazz is Dead, any of their albums
Quiet About It: Tribute to Jesse Winchester
Art Garfunkel, Watermark (largely songs of Jimmy Webb)
James Lee Stanley
All Wood and Doors (with Cliff Eberhardt)
All Wood and Stones (with John Batdorf)
All Wood and Stones II (with John Batdorf)