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If you like to listen to podcasts on your Nexus 7 you should check out this app. It has a simple interface designed to make it easy to find good podcasts and handle the subscriptions. There are a nunber of options for playing podcasts to make it a useful app.
If you are a heavy Google Reader service user like me then you need a good app to handle the task. There are some good ones in the Google Play store and my favorite is gReader Pro.
This app has a clean interface designed to make it straightforward to work with lots of RSS feeds in Google Reader. It syncs with Google Reader on the fly so you never have to see the same article twice. It is as fast as any app I've tried for handling thousands of RSS items in one go.
Android has good support for Google Docs but if you need Microsoft Office support this is a good solution. It handles working with Word, Excel, Powerpoint, and PDF documents. It won't always work perfectly with sophisticated Office documents but does a great job with most of them.