Gizmodo: "Feast your eyes in these detailed videos of the beast that is designed to match-and-crush 5th generation American combat jets. It's the Sukhoi PAK-FA, and it comes loaded with some amazing technology from the other side of the fallen wall.
Traditionally, the then-Soviet-now Russian fighter jets have been feared all over the world. Even their now theoretically outdated units—the MiG-29 Fulcrum and the Su-27 Flanker—are still among the most effective and destructive air combat units in the world. The Sukhoi PAK-FA is here to replace both, and it will take on the F-22 Raptor and F-35 Lightning II starting on 2013.
The new plane is derived from two 80s research projects—the inverted-wing Sukhoi Su-47 Berkut and the delta-wing Mikoyan Project 1.44—but it incorporates the latest avionics and weapons systems, and everything you could expect in a 5th generation fighter."