Steve Piticco, Joey Wright and Dan Whiteley are all great bluegrass guitarists, but I can't find any Youtube videos of them playing bluegrass guitar so here are some clips of Steve singing and playing a funny song and Joey backing up his wife on mandolin and Dan playing some mandolin too:
Steve Piticco
Joey Wright
Dan Whiteley
Here are all three together, with Steve and Joey on Telecasters and Dan on electric bass:
Steve Piticco, Joey Wright, Dan Whiteley
I know I was only s'posed to mention two, but I can't resist dropping this video of Terry Tufts:
Terry Tufts