These ideas have been nothing short of awesome. Seriously. Keep them coming if you got 'em. Extra props to Erica for providing the inevitable associated-nicknames list.
I am going to be giving my roommate the full FOTCAT list in the next couple of days and once we decide on one, I'll announce the verdict. Until then, he's going to have to settle for Mr. X, Jerk, Bubba, Tough Guy, Doctor Stupid, Psycho, Monkey, Little Dude, The Unit, or Satan.