Job Simulator is one of my favorite VR games, and is the one I most often show as demo. The humor is just spot-on, and (as one anecdote) watching people try to interact with a virtual computer by touching it, fail, and then realize they have to actually use their controller to move a virtual mouse is... priceless.
Crouch walking is one of those things that is both incredibly awesome but also needs to be optional. I think Alyx did an okay job with it but there were times when I had to literally crouch behind cover not to die. Again, it was pretty awesome but I'm glad they have a toggle crouch option in the settings.