Take note: 2 ha = maniacal, 3 ha = diabolical, 4 ha = you are starting to lose credibility. Remember, you are shooting for evil with a tinge of crackpot, not full-on crackpot.

muaha : Results 1 - 100 of about 63,700
muahaha : Results 1 - 100 of about 339,000
muahahaha : Results 1 - 100 of about 321,000
muahahahaha : Results 1 - 100 of about 191,000

(No, starting with "mu" instead of "mua" or ending with "h" is NOT correct. You won't strike fear into the heart of anyone with a dangling "h".)