Just to add to the addicition information, this article came out today:

Video Games Are Addictive, Scientists Say

My first response was "Well Duh, I could have told you that, they don't call it Evercrack for nothing."

I thought this tidbit was interesting:

"a survey of hundreds of heavy online games players showed half of them reported family conflict and romantic failure as a result of their hobby."

Sound familiar to anyone? hmm?