I find the best experiences for me are those that require less "getting your VR legs": puzzling places, zombieland or that kayak infiltration game. Of course everybody has different preferences, but to the author's point: not everyone wants (or can) play high intensity action games (which is what AAA focuses on).
As an aside: the other big one are sports games (usually racquet), playing ping pong or tennis feels realistic and its a good exercise.