There were a few Packers I felt they slightly underrated and a few I think they overrated (Kampman most notably)
Only one really stuck out like a sore thumb to me and that's #99 Jeremy Thompson, OLB. He was a rookie DE last year, but during the 2008 draft he was being looked at by a lot of 3-4 teams as an DE-OLB convert.
Just based on OTAs, he was given first team reps over round-1b pick Clay Matthews III and veteran linebacker Brady Poppinga and based on all accounts (I know it was OTAs) he looked better than any of the other OLBs in coverage and rushing.
And he's rated 50 overall, tied for being the worst player on our team.