He offers good critiques of American foerign policy. But his biases sometimes get the best of him. Its best to take anything that he says with a grain of salt.
Admitedly, there is a great temptation to somehow romanticize Chomsky as America's 'dissident'. But the reality is a little bit more complex.
I guess that I have already had my fair share of Chomsky, Howard Zinn, etc.... for my taste.
By the way, Christopher Hitchens has an excellent article in The Nation magazine. It gives you hope that the Left is not that wacked out!