Uh, be careful what you wish for. There's no way to turn the automatic play feature off. I personally don't like it, and wish I could disable it. On account of it, and my dislike for it, I no longer watch Crackle on my Roku 3. The Roku Stick version is the traditional app, so I use the Stick for Crackle.
I can understand that others might like it, and that's great. For them.
Roku Ultra (4660)
Apple TV (5th gen), TiVo
Roku boxes from every generation.
Apple TV (2nd, 3rd, 4th gen)