According to NCAA Football 08, KEller is 4h best QB in the league behind McCoy, Daniels, and whoever A&M has. Either this is the best QB class ever to come out of one conference or Keller is not a first rounder.
That being said, a video game does not make it accurate, especially in the preseason. However, just about the only place with Keller hype is Nebraska, even less accurate. The rest of the nation isn't calling him a potential first rounder. I personally would be surprised to see him go any earlier than the third.