I have been using the Roku app for a short time now. I do love it over having a full HTPC in my bedroom, but the only thing that is a little annoying is that I have to scroll for days to get to TV shows or the movie I want (we have a huge library, as I am sure many users do). I see that there are plans for a search mechanism, but would think an ability to organize them by first letter might be easier. I'm not sure how I could search considering the device has no keyboard, and navigating a software keyboard with the Roku remote could be a pain. I am sure your folks are already on this, but didn't see a specific forum post on it.
You've all done amazing work on the various apps and capabilities. Keep up the great work!