The Oculus Rift is the platform that reignited the VR renaissance through its successful Kickstarter campaign. The Rift uses a PC and external cameras that allow not only rotational tracking, but also positional tracking, allowing the user a full VR experience. The Samsung relationship allows Oculus to use Samsung screens in their HMDs.
While the Oculus no longer demands that the user remain seated, it does want the user to move within a smaller 3 m x 3 m area. The Rift HMD is wired to the PC.
The user can interact with the VR world with the included Xbox gamepad, mouse and keyboard, a one-button clicker, or proprietary wireless controllers: