Thought I'd put this here since it's more Bengals related. While I might agree it's not necessarily as high an immediate priority as OG or Safety perhaps even WR (I say nec. because it can go either way) there's great value in this area of the draft and if you are gonna draft a CB at all it's wise to do it in the 1st 2 rounds, the odds are much better for success at that position the earlier the pick. And you have to look at the position not just in the short term but also the long. Though an argument could be made for the short term as well. Hall's injury, and the fact we have only 1 corner with good top end speed (Allen) to cover downfield.
After '12 we have 2 corners under contract Leon Hall and Jason Allen and Halls injury brings some doubt as to whether or not he can rebound.