[xoxoxoBruce]

Rule #1 - Make sure she'll say yes before to make a spectacle of the proposal.
Rule #2 - See rule one.

In this case she did say yes, but it's a good example of the lengths and expense some guys will go to... also pretty damn clever. It took him 4 years and 26 countries to put this together. The first 50 seconds is an explanation you can skip if you want.