Mark Cerny, the lead architect of the PS4, recently went on The Late Night With Jimmy Fallon show and showcased his game Knack and the console as well.
This is an off screen footage but shows Mark Cerny and Jimmy Fallon talking about the PS4 and its capabilities. Cerny tells him how the DualShock 4 is improved over the third controller.
We also see how Knack looks like and it runs pretty smoothly based on the gameplay video. Earlier Phil Spencer from Microsoft had gone on the show to show what the Xbox One can do. They also showcased Forza Motorsport 5 and one more game.
We will post another video of the PS4 games in action but for now check out the video below which shows Mark Cerny and Jimmy Fallon.