Many have wondered why the Portland Trail Blazers would take two centers with consecutive first-round picks, especially when it wasn't a position of need. But the two complement each other exceptionally well -- Donovan Clingan as a defensive anchor, and Yang Hansen as an offensive hub.
It also makes much more sense when considering how unreliable the other center options are. They had a logjam regarding the number of centers on their roster, but it was never actually a logjam in terms of Chauncey Billups being overwhelmed with options. The primary reason for that was Robert Williams' health.