Imagine looking up to watch a beautiful hi-def sunset, then walking off a cliff.
God, that would suck.
FPS players would probably suffer some second-hand PTSD or something.
That would also suck.
What if you were running away from the boulder in "Raiders of the Lost Ark: The first non-sucky movie-based game. HD." (Game TBA) and cramping up.
That would suck most of all.