Fark linked up news of a high-tech can that will cool your beer 30 degrees in 3 minutes. Since it's being tested by Miller, you'll still end up with good ol' American pisswater, but it'll be cold pisswater!
Judging by the complexity, I can't believe they'll bring this to market at anythign like an affordable price. Guinness got away with a fancy can because it's expensive beer in the first place... if you're willing to pay $5 for a bottle, $6 for a can isn't much of a stretch. But if you're only willing to pay $5 for a twelve pack, well, the economics of the thing change quite a bit.