He has 406 Home Runs right now..he's only 32.
He's averages around 40 on a good year (for him).
If he puts up a few more solid years he could definitely surpass 500 IMO..if not go farther.
Also he's one of the few players that can boast about about .204 batting average, yet still hit 40 HR, and 100 RBI's with a OBP in the 340's-350's.
I also imagine he's getting nearer to some K record as well.
What say you Adam Dunn an eventual hypothetical Hall of Fame candidate>?