imo;

greatest person of last century: einstein (pure genius, thinking way ahead of his time)

most evil person of the last century: most would say hitler, but there are many more equally evil men that ruled (in some cases still do) countries such as in cambodia, zimbabwe, isreal etc.
i detest anyone that abuses power they are given, mainly country leaders, but also company heads (windows being closed source = bad idea)(cigarette industry as well)

most important event: world war 2

most important invention: plastic (think it was last century, could have been 19th tho, correct me if im wrong [img]i/expressions/face-icon-small-smile.gif[/img])

dumbest person born: GWBush (and they let him into power why...)

best things in general: movies, anime, condoms, computers, the internet, CDs, capitol punishment (well in the UK atleast, bring it back!), rock music, cars, planes