When the Haiti earthquake happened, I registered with UNICEF to set up an account, and posted to Twitter for people to donate to it. In a matter of a couple of hours, $30,000 had been donated. That, to me, was eye-opening.
I'm one of those people that thinks the world changes in smaller and in more mysterious ways than a lot of people like to think. A lot of traditional charities and organizations do things that on the surface seem like a good idea, but it doesn't change the way that people think about interacting with other people.
When you're doing lots and lots of episodes and you're playing the same character, it's great because you really get to know the character and it becomes a really fast style and you find subtleties in it.
I actually think that the most efficacious way of making a difference is to lead by example, and doing random acts of kindness is setting a very good example of how to behave in the world.
Technology has changed the fan/actor interaction quite a bit. Now it's really easy to communicate with a large group of people in a really short time, and that... opens a lot of possibilities. You can do a lot of things with it that you couldn't do before. It's kind of fun to figure out how that can be employed.
A lot of times I think the cast members, the lead characters in a show really set the tone for the show. On some shows, the stars of the show will just be whining and complaining and spending the whole time texting their boyfriends on their Blackberries, and there's just no attention given to the work.