Brandon Graham fits the right 53 better than most anyone in this draft. OLB is certainly a position of need, and is basically a premium position in the 3-4.
This is a reach by most all accounts, but that doesn't mean it's without merit. Graham has almost no weaknesses apart from only being 6'1" He is the best OLB for 3-4 teams out there, assuming Pioli and Co. don't want to take a huge risk with Pierre-Paul and they agree with the "experts" that Derrick Morgan is incapable of making the transition (I think he'd have a shot because of the eerily similar measurables to Tamba Hali).
Not a sexy pick at the time, but there is a growing sentiment he might not make it out of the top 10. If he turns into the next Dumervil, Pioli looks like a genius.