I got a chance to try tiltbrush recently. I drew a little cottage around myself, complete with a table and couch. While I was painting the ceiling, I subconsciously stepped around my couch to avoid tripping on it. That's when VR clicked for me :)
My first time with VR I had a similar experience playing a driving sim on a friend's DK2. When I had finished playing I stood up out of the chair, ducking to miss the door frame
