http://www.hardballtimes.com/main/article/bringin-some-serious-cheese-matt-cain/
So it's spring, and we're all feeling a bit optimistic, right? Linked above is an analysis of Matt Cain's mechanics, written by Carlos Gomez, ex-pitcher. He has a few quibbles but pegs Cain as a possible breakout candidate.
And, from a more traditional stathead point of view, I thought I'd point out that Cain's top PECOTA comparable is a young John Smoltz.