I love Superman's rouges gallery. From Metallo right through to Mr. Mxyp... Mr. Mzyptys.... Mr. Mxyut... Darkseid, there's not one I wouldn't cross the road to read about - and Bizarro is definitely one of the ones worth more shoe leather than most (click to enlarge).
It's always good to sit down and try and figure out his dialouge or just crack-up at his reverse approach to life. What do DC do to add to my joy (and that of a few trillion other fans?) Create Batzarro - well you would wouldn't you?