Usually, if I'm extremely angry, I either go on a crazy cleaning spree or bake bread (as kneading dough requires a lot of force).

But yes, if you go on youtube you can probably find a bunch of fitness videos that will help get the energy out in a productive way as well. Sometimes the best thing I can do is just get outside and start running. Just run until you're exhausted and then walk back. I know my friend rearranges his furniture when he's angry because it's a lot of physical activity.