Name my new computer! (Poll at the link.) Past and present names include: Napoleon, Mao, Stalin, Brezhnev, Khrushchev, Hirohito, Pol Pot (Windows ME), Genghis, Kublai, Alexander...
Poll...
Gotta go with Charlemagne. Almost went with Dong Zhuo, but good old Charlie... yeah.
Still, my favorite mad ruler has to be John. He got into a pissing contest with Pope Innocent the III, and that's one of those games where everyone loses, yet we somehow got the Magna Carta as a byproduct.
Hmm. I'll have to read up about that John.