I'm a big fan of all his work, but I'm really impressed by his solo album so far. He shows a great deal of growth, both musically and lyrically.

http://www.youtube.com/watch?v=BP72cFjx69U

http://www.youtube.com/watch?v=HAX6DbM6xlY

http://www.youtube.com/watch?v=V6RIhLaCEuY