In video games, I always try to play the role of the character, not as myself.
- In Elder Scrolls, I am Chaotic Good.
- In Fable, I am Good.
- In Jade Empire, I am Chaotic Neutral with Evil tendencies.
- In Knights of the Old Republic, I am Chaotic Neutral with Good tendencies.
- In Mass Effect, I'm Lawful Neutral.
Tendencies mean that I have a preference for making certain decisions within my alignment. For instance, being Neutral but preferring to help people than cause harm.
As for real life, I suppose Good. I've done some questionable things, but I usually follow the law and try to help people when I can.