I have had the wave dream - several times! I'm always on a beach, and I can always see it coming, but nobody else seems bothered, and I know there's no way I can get away in time. I get right up to the point where the wave is arched right over my head and about to crash down on me...and then I wake up! I thought it was just a crazy dream that only I had - not had it for quite a while though.