I've never lost a PvP Goldeneye or Starfox 64 match...never. That includes 3 on 1 with maximum handicap, including against my friends who have "platinumed" the game (007 mode complete, all cheats unlocked), which I gave up on after an Invincibility/Facility Stage bug.
I also was in the #1 world-ranked WoW guild, Lux Aeterna, for a while, including our first MC and BWL clears.
I did some other crap that was really hard and I can't remember, too.