Reading your topic, I first thought you were angry since you had played too much WoW.
I have found self-punishment to work well in such situations. Working out is great, as you already know. Others include:
* Long-distance running/swimming/cycling, until fatigue
* Going to the sauna (a real Finnish one, preferably over 80 degrees Celsius) if available
* Beating the bag
* Going to a shooting range (not tried myself, but a friend recommends)
* Going to a laser rifle maze to massacre pre-teens, if nearby
You can also do something more peaceful:
* Going to a hike in the nature, if nearby
* Going to a theatre to watch comedy
* Going out with the funniest friends you have
* Making out / having sex
What is <i>not</i> recommended:
* Drinking alcohol
* Motor vehicles