I know I'm not part of the league, but I always enjoy looking back at drafts. Outside the first rounders, I'd vote biggest steals:
2010: Jed Gyorko, Andrelton Simmons, and Addison Reed all look like really solid value
2011: Tony Cingrani went pretty late for how good he's already looked.
2012: Lucas Sims, Alex Wood, Rio Ruiz look like pretty good value. Not too many stand out to me yet outside the top 60ish