Ben had this link over at his place:
Death By Caffeine
I'd have to drink 227.50 cans of Diet Coke before I was dead. I've only come close a couple of times. It's that last half a can that puts you over.
My morning addiction, British tea, is a little more intense: 170.63 cups to kill me. I'll have to keep that in mind on those mornings when I have been up all night with the kids. Or blogging. *yawn*