Rob Rang's latest 2012 NFL mock draft has a top five of Andrew Luck, Justin Blackmon, Matt Kalil, Robert Griffin III, and Trent Richardson. (The Browns would get Griffin, ending the Colt McCoy era in Cleveland.)
Carolina owes the fact that they are currently slated to have a top ten pick due to an inability to stop the run. The 6-4, 310-pound Still hasn't always played with the consistency scouts would like but emerged as a leader and difference-maker as a senior for the Nittany Lions, earning recognition as the Big Ten's Defensive Player of the Year.
Rang still has the Steelers taking Georgia offensive guard Cordy Glenn, leaving players like Memphis nose tackle Dontari Poe, Wisconsin offensive lineman Peter Konz (who ends up with the Ravens in this mock draft), and Arizona State linebacker Vontaze Burfict still on the board. Anyway, Glenn would solve problems for the Steelers at their biggest position of need, although it's unclear if he's actually someone the Steelers are thinking about at this point.
For more on the NFL Draft, check out Mocking The Draft.