This one will probably be the most interesting of the group. While most people had Zach Brown, LB, North Carolina getting chosen before the 52nd pick, it still caused quite the stir when the Titans picked him. That probably has a lot to do with the fact that Mike Mayock said he is allergic to contact.
The fun thing about Brown is that we really have no idea who exactly Jerry Gray is going to use him. He brings a lot of flexibility to the table, and we already know he is an upgrade in coverage over Will Witherspoon. He might be a better all around player than Witherspoon.
The addition of Brown also frees up Akeem Ayers to do more of the stuff that the Titans drafted him to do. I think he will be putting his hand down and getting after the passer some this season, which should make the pass rush better.