Though my addiction has waned a bit, my "statcounter fix (checking the traffic stats of my biz site and blog sites) still needs to happen several times throughout the day, otherwise I start to twitch and slur words. But, man, Crazy Egg brings checking stats to a whole new level.
They actually provide you with "heat maps" that show you exactly where people are clicking on your page on each visit (and more importantly, where they are not).
Though the service is not yet available, they plan to launch in April. If you have less than 5000 visitors to your site per month, you'll be able to sign up for a free option. If you have more, be prepared to pay up (but hello...it looks worth it!)