George Watsky is one of the more conscious Def Jam poets, who has been all over the place spreading his rhymes. He is tough to match. Check out other work of his on YouTube by searching "George Watsky." Saw him @ JAINA 2007, but neglected to keep a tab on him until February at the Bowery Poetry Club, and stupid enough, didn't follow his work until I saw the man, Nirav, interview him. Above, he's at the opening ceremonies of Greenbuild Chicago 2007 in front of 7000+, after which Bill Clinton gave the commencement address.