Given that it's been out in the States for a while, there are doubtless a hole host of links I could post, but for now I'll limit myself to just two. The first is some comments by Julia O'Brien, Many thanks to Eruesso for sending me the link over a month ago. I've been meaning to post it up for a while, but haven't had the time.
Secondly, my friend Ron Reed has posted 18 "Questions for Further Study" over at this Soul Food Movies Blog. Oh and here's Ebert's review for good measure.