Had a strange one, recently when watching anything on Amazon Prime on my Apple TV it would randomly crash, sometimes after 1 minute, sometimes 5 or even straight away.
It would be fine on Netflix. The resolution was an old classic.
Go back to the main menu, then Settings -> General -> Restart.
Once this was done it functioned perfectly.
I am always interested in feedback so please feel free to add any comments, or you can mail me here. If you would like to submit a quick tip with full credit and links back to your site then also feel free to contact me.