Driven, I would recommend any Buttman title (perhaps with the exception of Anal Show 2...), but if you want to know what gonzo means, check out "Buttman's Revenge". The first scene, in particular, is to me the best example of what is gonzo : not really amateur porn (the Ed Powers formula), certainly not "wall to wall" sex (Anabolic/RLD/ZT style). I like to think - sorry if I'm stating the obvious - that gonzo is very much the oeuvre of John Stagliano (one of his more brilliant followers being Rodney Moore).
Just my opinion.

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