Amazon Top Sellers RSS

Amazon, in common with a lot of big ecommerce site, makes use of RSS for a number of things including lists of top sellers. In case you didn't spot the post over on their official affiliate blog, you can easily generate RSS for any category AND add your affiliate ID.

The RSS feed includes the title of the item and very little else (there might be "thicker" versions available if you go digging, but I haven't found them yet), so it would be quite easy to grab a feed and integrate it with pretty much any sort of site you want. Adding some basic styling etc., and you've got a nice little top list.