So I remember a long time ago being at Christian's place and making fun of him for having extremely old pretzels (almost 2.5 years actually).  The other day I was cleaning out the chip cabinet and noticed a bag of pretzels that had not been opened yet.  They're not quite as impressive as Christian's bag, but this one managed to make it over 1.5 years.  They actually didn't taste too stale until the third one I tried.

One thing that is interesting about these pictures is you can tell that in the span of almost a year, the price of pretzels increased about $0.20 per bag.