Football Outsiders publishes this great evaluator of future pass rushing talent called SackSEER, and the 2011 SackSEER unsurprisingly has Texas A&M LB Von Miller at the top of the list. The entire article is great, but as far as the Green Bay Packers are concerned, one possibility in the draft is Georgia LB Justin Houston, and he is listed at No. 2 behind Miller.
If they were able to select the 2nd best pass rusher available with the No. 32 overall pick, that would be quite a deal.