The video clip below shows one of the Russian Sukhoi PAK-FA stealth fighter prototypes executing some pretty amazing maneuvers during testing. We don't have details of the relative speed and direction of the PAK-FA and the chase aircraft from which the maneuvers were filmed, but even without that background information, the sequence is pretty impressive.
According to Flight Global's DEW Line blog, the Russian commentary appears to suggest that the flight control systems are automated to the point they can land the aircraft safely if the pilot becomes disabled. If so, that'll be an aviation 'first', as far as I'm aware. If any readers are fluent in Russian, would you please let us know in Comments whether the announcer or newsreader makes that claim, and if possible provide more details?