I don't know if this is an "accomplishment" but I think it's cool. All four of my main characters on page one of my account are over 200 million experience points. I just finally broke 200 million on my old RAmar today, so:
Ade (RAcast): 677 million
Ade (Hucast): 212 million
Boss Hogg (FOnewm): 337 million
Ade (RAmar): 200 million
I wish we had an "overall account" EXP leaderboard...