I've been using this app on my Nexus Player for over six months now, it's a really great app!
This will be the first thing to install when my Shield arrives this weekend!
Not the developer just thought i'd share it with you guys. you can add custom subreddit, also updates home screen's recommendations.
Thanks for posting this! I'm the developer of HopWatch. Just wanted to let you all know that a big update to this app is coming soon which will let you browse images and GIFs on reddit in addition to YouTube videos. I'm hoping that some of you would like to help me test a beta of the new version, so I'll post again on the subreddit about it when it's ready - hopefully in a couple of weeks.
Would love to hear what you think of the app!