Blockhead is excellent, i saw him live last night and it made my day! He produced all of Aesop Rock's earlier albums (aka every good Aesop song is a Blockhead beat) and he's got 3 incredible solo albums, "Music by Cavelight, Downtown Science, and Uncle Tony's Coloring Book as well as a new one coming soon... The Music Scene. Last night he improvised over his own music while DJ Signify scratched over it, something you don't really see anymore.