If we're talking about users on here, then I nominate Silent Bob. If we're talking about users in general, then there's this guy from this animation website I used to post anims on (Darkdemon. Animator.net if you want to check us out). He posted this sick battle one day that pretty much shot him from the rookie section all the way to the Elite Zone in like a week's time, which is uncanny and had people thinking that he was an Elite's Alt (which he proved he wasn't). That's a crazy feat. In comparison, it took me half a year to go from the Beginners Hall to the Veterans Hall (which is fast).