With Google Reader closing in just a few days, it may be time to export your data. Services like Feedly are already building migration tools, but if you just want to look at the data, this tiny web app has you covered.
Githubu user BriceMcIver built a simple tool that allows you to view the contents of your Google Reader data. If you want to use this, you'll first have to download your data from Google here. Once you have the files, extract the zip and point the file chooser in this web app to any of the files ending in .json.
It's designed to work with your list of Starred items (which many of us use as a makeshift to-do list or read-it-later bucket), but I tried it on shared articles and articles from followers, and it worked there too. It didn't work 100 per cent of the time, but it's worth a shot if you just want to see your data without going through a big import process.