The Dolphins once drafted Pat White in the 2nd.
If Pryor plays the 2011 season at OSU he is probably drafted in the 2nd round. He is human specimen that runs away from people before he hits his stride. He could be used in a wildcat formation or even as an offensive decoy.
The one issue I would have in drafting him that high is he gets very little preseason action and is suspended for the first 5 games. The first year is basically a wash as to getting him in and having him learn the system. That said he could be a big weapon even if he doesn't play QB.