I'd gladly answer to that title, though, if it meant I could lay claim to even a few of the 30 or so Super Mario Bros. bottle caps Pepsi placed on its Japanese products in 2005.
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Although I think my favorite (of the ones I've seen) is the Cheep-Cheep cap above, all of them are pretty cool.
To see more of these drool-worthy collectibles, check out this post over at famicomblog.blogspot.com.