I first got into him reading Red Theology because the intersection of Christianity and Marxism is relevant to me personally.

I've heard really great stuff about Socialism with Chinese Characteristics, I'm told it's a great primer on how socialism works in China from a sympathetic westerner's perspective.

My library system here is not really able to get me much of his work unfortunately so I have to pull the trigger on buying them, which I haven't done much.

Edit: He also has a blog where he posts sometimes, kinda a mix of good scholarly interests and his experiences in China.