Valve added DK2 support for Half Life 2 today. This is like the best shit ever. The game is extremely fun in VR. And that's coming from someone who never even was a huge HL fanboy. The VR just adds so much to the experience. Interacting with life size NPC's, shooting at life size stuff, seeing the huge citadel in the backdrop etc. The dated gfx are no issue at all with the current screen resolution. It looks actualy pretty good.
The biggest surprise is how well it works already despite it being highly experimental. Everything is functional and can be played perfectly fine. I didn't expect fps'es to work well in VR due to motion sickness. I played for around 1 hour straight, only feel a tad dizzy and have a slight headache. No comparison to the Tuscany demo that makes me feel queasy instantly as soon as i move. VR is the future! You heard it here first.