I think they're brilliant just from a musical standpoint, dope beats and Boots has great lyrics/delivery, when you add in their politics they're pretty clearly one of my all-time favorites. Some of their best tracks, imo:
http://www.youtube.com/watch?v=fZ_gFyB6GnA - "My Favorite Mutiny"
http://www.youtube.com/watch?v=fGL4I58imFU - "Fat Cats, Bigga Fish"
http://www.youtube.com/watch?v=bVksHCi7n7c - "Laugh/Love/Fuck"