Tsunami Wave surfed?!

What's the biggest wave ever surfed? Imagine a ten-story-high wall of water crashing foaming onto the shore. That's probably the image we all have in mind when we imagine a tsunami, but does it match reality? And if so, why aren't there madmen surfing the wave? I mean, a wave like that just screams to be taken! Fear of heights? Too much speed? Is life more important? After all, we are talking about maniacs! Nah, seriously, where would someone get the idea to ride a tsunami? I know where, in movies! Those disaster flicks always portray tsunamis as monstrous waves. Realistically, the difference between a tsunami and a surf wave is as great as the likelihood that such a movie wave will cause ...