Peanut Butter - Is it any good?

Is peanut butter any good nutritionally? I question this because I have seen too many episodes of 'How it is made' on the Science Channel and most of the juices and cereals etc. is processed heavily and loaded with enzymes and artificial colors and other junk.

So I was wondering if the supermarket brands of peanut butter is any good or should I try the homemade ones that you get in farmers market.

ThanX.
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