Just watched the movie "The yes men fix the world" and it's definitely one of the best movies I've watched. Here, take a look. Those guys are hilarious and they, hopefully, managed to make some people change their view of the world.
Now for the hard part: What are you doing to help people in need and/or the environment?
I'll start. I'm not doing anything extreme, I'm not even spending money to help the environment, I'd rather say I'm saving money doing it. The things I'm doing is small everyday things, like taking the bike or buss (preferably bike) instead of a moped when I need to go somewhere, I recycle and so on. However my computer interest is hurting the environment, some poor African miners and some Asian factory workers more then I'm helping it, because let's face it, the Earth weren't built to have 6 000 000 000-ish people living like we in the industrialized countries are.