If you haven't yet, try to catch At Home with Jason Heyward on Fox Sports South. It's a really cool interview from start to finish, and briefly chronicles his playing career from when he started playing at age 5 up until his 2010 season.
Aside from having to listen to Brian Jordan call him "Haywood", you get to see his childhood home and hear his parents and little brother talk a little bit about the journey to the big leagues, his prep teams, the draft, etc. The best part, for me, was hearing Jason talk about what was going through his head when he got called up and recanting his opening day at-bat versus Zambrano.
I remember seeing an NFL program where Matt Hasselbeck was interviewed about his draft day. He said something to the effect of "I got drafted by the Packers, and all I'm thinking is 'Well, I should probably take the Brett Favre poster off my wall'." Well, it seems this thought didn't cross Jason's mind, as the Chipper Jones poster (seemingly from childhood) was still on the wall in his room. Awesome.