Alistar the Minotaur! I always tend to gravitate towards the characters that rely on brute strength like this guy.
As far as character designs go I like Alistar's quite a bit, he instantly lets the player know what they are in for, a bashing, crashing, head-butting monster that wont fall very fast in a fight. the colors add a lot of fun to him and i'm a big fan of the mo-hawk.
I remember in beta back when they had the promote skill available and Alistar could eat a lane's tower at like the 3 minute mark. Any great Alistar players out there? I know he's not the most popular pick of late but lets hear some love for that battlefield bovine!
-jouste the drawbarian