PS. I was on an Air Canada flight just this weekend and they allowed me to hide all Movies in the in-flight entertainment either by R and above, PG-13 and above, or PG and above.
It worked great. I personally chose to hide everything PG-13 and above and was left with several PG and G rated titles to chose from. After selecting it, it hid all other movies. And instead of frustratingly searching and searching and searching for something to find I ended up watching 3 good quality PG rated movies on the long flight from Dublin to Vancouver: Jersey, Leap Year, and Gallipoli. And I had several others flagged to watch after that like: Martian Child, Temple Grandin, and Chariots of Fire.
Imagine that! Less time being frustrated, and more time watching movies! Is that too much to ask for Roku?