Awesome feature that almost no Apps have.
I have several apps that have a night mode (Alien Blue for iPad, Pulse News Reader on Android, Star Chart) and I love it... it reduces eye strain and lets me surf in bed by reducing the glow when others are trying to sleep. Its just easier on the eyes. It would probably improve battery life on the AMOLED display devices too. I understand there are dimmer apps but I find that these don't work as well.
Does anyone else feel that Night mode should be included in more apps? If you know any apps with this feature, leave them below as a resource.