Waves ... in the ocean

Per an article in Vanity Fair (February 2011), the tallest wave ever recorded to have been surfed was around ninety feet tall - that's maybe 7-8 stories high.  And, it was a 45 year old (Ken Bradshaw) who did it.  But, he needed some help from a friend on a Jet-Ski who towed him into the 'intercept' of a wave.  It happened on Oahu.