The Reader team is pretty small and while the list of things we'd like to do is a mile long, there are only so many hours in a day. It's always very satisfying to see that we have users passionate enough to step in and do some of the things that we always thought would be nice to have. Here's some recent examples of this:
Jason Toal has put together an excellent screencast that covers nearly all of the features that Google Reader has to offer. If you know someone who is new to the application, point them to it and they will quickly get up to speed. Even if you are a seasoned user yourself, you may be interested in the more advanced features that are covered, such as sharing.
Eli Dourado has written GROSX, a notifier for Mac OS X that tells you when you have new items to read in your Reader account. In addition to a menu bar icon, GROSX also integrates with Growl, allowing you to get notifications of new items with cool translucent overlays. GROSX also lets you monitor a specific label so that, if you have 390 subscriptions like me, you can monitor only the really important things.