Witch supervillian has the best motive? (in cinema)

I have spent years watching superhero movies and I have noticed something. Most supervillains (in movies) have a simple or cliché motive for becoming a villian. Whether it be mind warping or just plain chaos, the villian's story always seems to sound familiar. Now this is not to say that villains are boring because some villians are more interesting then the superheros, not saying any names...*coughdarkknight seriescough*,but I am interested in hearing your personal opinions on witch supervillain has the best and most unique motive and back story.

Ozymandias from Watchmen.

Magneto.

Bane.

He did it for LOOOOOOOOVE.

Beata

General Zod, from MoS.

Magneto. He had a point about us Humans.

Wrong bane did it as a voice off against batman!

@scouterv: he was my number 1 choice too.

@deadcool_xd: That too.

Beata

Magneto, obviously.

Which* and Ozymandias.

ozymandias

Ozymandias, king of kings.

Gaze upon my works ye mighty and despair.

@blacklegraph: cool

Zod and Magneto, hopefully they do Black Adam justice. If so, then he might top the list.

I know this is getting cliche, but Heath Ledger's Joker. Unlike the other comic book movie villains - who had a solid, reasonable motive - Joker didn't want anything other than to cause chaos. And, like his comic book counterpart, he didn't have a definite back story. Which makes both the comic book and film version more interesting and unique, IMO.

Though Magneto is right behind him.

Magneto easily

Ra's al Ghul.

Top 5 in order:

- Ozymandias

- Joker

- Ra's Al Ghul

- Magneto

- General Zod

@battle_forum_junkie: cool view

Syndrome

Gru

Megamind

Ozymadias, Magneto, and Zod

Senator Kelly.

Zod

Magneto

Ozymadias

Ra's Al Ghul

Bane

Ironically villain from the popular movies(Marvel) these days are not in anyone's list.