The best band you've never heard of..

Gamalon, from Niagara falls.

http://www.youtube.com/watch?v=VcDqz-yVKEo&feature=related

Guitar heavy fusion. just like the old days

Mr T Experience, affectionately known as MTX. aka the other Green Day.

The best jazz group you have never heard of. Jacob Fred Jazz Odyssey. I saw these guys live at a small jazz club in Philly a couple years ago maybe in front of 50-100 people: http://www.youtube.com/watch?v=2JWbTC0bkng&feature=related

how about Pentagram ?

imagine if Black Sabbath had hailed from Virginia and perpetrated even heavier skull crushing riffage with a more acute psychedelic element...

they are the underappreciated underground American Iron of rock music