Well, David Harr (gamertag Diego Knyte) would -- that is, if you consider automatic gamerscore point-building via advanced robotics evil*.
David's robot, dubbed xBot, completes a simple task: it restarts a match after the current one ends in Perfect Dark: Zero, allowing him to gain the "Played 1000 Dark Ops Games" and "Played 1000 Deathmatch Games" achievements. If gamerscores weren't worthless before, they definitely are now.
And this also leaves his hands free to do, well ... whatever.
One has to admire his dedication to a higher gamerscore. It's reported that this device took ten hours to build. That my seem excessive, but the time (and wrist pain) saved allows
(* Destructoid does not condone the use of robots for cheating or other evils)[Via Gamesdog]