I'm not even going to include Dwight Howard on this list. It's too obvious, and you know about it. More to the point, Howard was traded, thus making the acquisition not exactly a "pickup." A pickup would be the fictional circumstance whereby the Lakers would sign Dwight Howard to the veteran's minimum, while keeping Andrew Bynum on the roster.
No, value pickups are underrated guys who should help a team beyond what their salary reflects, or beyond what the public knows about. There was a myriad of such signings (and sign-and-trades) this offseason, even if Howard stole most of the headlines. Considering Howard's balky back, don't be surprised if one of these pickups have a bigger impact next year.