I saw mark O'Connor play with the Dregs quite a long time ago.
I gave Tony Rice his own thread
http://www.striped-bass.com/Stripert...tony-rice.html
Seems you like bluegrass so you may like this thread too. Lots of talent listed here. New Grass Revival with Bela,Bush, are one of my fav. bluegrass bands
http://www.striped-bass.com/Stripert...bluegrass.html
and one more. Should keep you busy for a while.
http://www.striped-bass.com/Stripert...formances.html