* Document -all- of your bank accounts, assets and debts.
* Don't die without a will. If you do and you appoint an executor, you are giving them a very dirty job.
* Think twice about offshore accounts. They are a nightmare for executors.
This is one of the reasons I've been putting off completing a will :-( Is there a good option for going about this without naming an executor?
You can appoint lawyers to be executors to your estate, mind you. They take a fee from the total bucket, and make sure everything is done according to your will.
Also, as far as I'm aware, appointing them the executor of your estate doesn't mean you give them the money. You entrust them with resolving all the issues with your estate, it's a bit different.