Great stuff, Whit and Helen! Thanks.
My favorite example of a password comes from the TV SiFi story "Babylon 5" when "Garibaldi" - the tough guy head of security - has to tell his password in order to reboot the computer : Garibaldi's password ? Peekaboo. As he says in the film "Who'd think of it?"
A chum of mine uses Letmein which is fun!
As for me, I find Hawaiian words useful.