Found this article over on SI.com about the 5 best fits for rookies and 5 worst fits for rookies. Among the best fits was one Jimmy Williams:
5. Jimmy Williams, CB, Atlanta: Forget that this kid slid out of the first round. The Falcons needed someone to match up with taller receivers, and he's big enough to do that. He can team up with Pro Bowl starter DeAngelo Hall or he can line up in nickel situations, where his size should make him an effective blitzer. Either way, he should benefit from the talent around him and draw upon the experience of such veterans as Hall and recently signed safety Lawyer Milloy.
Other best Fits: Leinart in Zona, Ngata in Baltimore, Carpenter in Dallas, and McCargo in Buffalo
5 players in the wrong situation: Davis in San Francisco, Hali in Kansas City, Huff in Oakland, Holmes in Pittsburgh, and Fasano in Dallas.