That is a great idea!

Here is another tip that is great for CYA.
This came up in our engineering design class on proving and protecting patents.
It can used by anyone who wants to document and protect themselves in potentially sticky situations.

Take your digital camera pictures and burn them onto a CD. Write a description of the contents of the CD and put it into an appropriate envelope.
Go to the post office and mail it to yourself.

When you recieve it... DO NOT OPEN IT!!!!

For less than 2 bucks, you now have an "OFFICIAL US GOVERNMENT DOCUMENT" that will stand up in court. It must be opened by the court. Certified Mail or Registered Mail is even better. In most cases, just the postmark will suffice.

This can also be applied to disposable cameras along with the accompanying negatives.

I have a disposible camera in the dash of each of my vehicles with instructions that if my wife or I are ever in an accident to take it out and shoot a lot of pictures.