Noam Chomsky is an interesting fellow. He is a moral relativist, which of itself suggests hypocrisy and lack of insight, so he becomes an easy target for mockery. But nonetheless, he is, by several orders of magnitude, more intelligent and nuanced than his acolytes, such as Naomi Klein and Norman Finkelstein.
He has done some very positive things, such has his campaign for East Timor, that helped draw attention to the situation there, and he was about as wrong as a person could have been regarding the Cold War and the approach to the former Soviet Union, which would still exist if Chomsky's counsel had been followed.
Here is an interesting interview where he discusses his take on aspects of the Israel/Palestine issue, boycotts and the legitimacy of states in general. I disagree with much of what he says, but this provides a good window into his mind:
A Conversation with Noam Chomsky on Palestine/Israel from Frank Barat on Vimeo.
h/t TVO's Agenda blog