I'm a fan of Sierra Mist, so I was pumped to see that the “Pepsi+iTunes” deal is back this year. You'll see bottles of this and other Pepsi products with yellow caps… possibly containing a free iTunes “download code” underneath.
I think the odds of winning are something like 1-in-3? But, I wonder if the old see-if-you-won-before-buying-the-Pepsi trick will work this time?
UPDATE: Gizmodo is reporting that the trick still works! This year's yellow-capped bottles have already hit the streets in some areas.