A recent study by Mint and Walletpop found that "the price of some products has not kept up with that inflation; and in some cases, they are even cheaper today than ten years ago."
It's an interesting, category-spanning list, and various reasons are given for the inflation-bucking price trends, such as lowered cost of production of items, allowing manufacturers to provide more value for a better price (i.e., Sears paint and the Volkswagen Golf), streamlined logistics and shipping and of course, the recession (Harley-Davidson and its Sportster motorcycle are given as an example here).
Anything else not on this list, that should be?
http://www.blogcdn.com/www.walletpop.com/blog/media/2010/06/mnt-inflation-r4454ver2.jpg