Okay, most famous things I've done:
I took an acrobatics/jazz course and did a number on stage at an amusment park. Not a big one like 6 flags or Kennywood, but it was reasonable. The number was to Kryptonite by 3 Doors Down.
Of course, I'm also infamous for climbing to the second floor of my highschool via the outside wall. I had people who recognized me as "spiderman" for a good 3 years after I graduated.
I developed the method for putting Baldur's Gate 2 SoA and ToB all on a single DVD which would allow you to do a full install and play the game with only 1 disc. You can find that here
I also had been acting as a "bartender" for a continuing D&D/Anime styled RP Thread that was called Ye Olde Pillow, named for another thread I had been supervising. Both of these were in that same forum and I kept archives of everything. It lasted a solid year before I finally let it close down, and it was posted in frequently enough that I generally hit 100 pages every 3 days to a week. It had a flavor to it similar to The Callahan Chronicals, by Spider Robinson, if anyone has ever read that. It ended up moving to 4 different forums as management changed and that type of thing and most of the "patrons" followed it. The one thing that I felt was my biggest pride in that whole thing was that I managed to deal with every troll and conflict withoutever banning anyone.
I also am responsible for a Mime Kit, and Improvements to the Wizard Slayer and Beastmaster in a fanmod that I did for Baldur's Gate 2 which was apparently better received than I originally realized. It is kinda cool to have people playing a game that I actually contributed something to.
Other than that, just do a Google Search for "Grey Acumen" nearly every occurence of the name is either me or reffering to me.