Why bother with this? If it's ridiculously complex you're likely to forget it, and no matter what your password is if you've got a keylogger you're screwed anyway. Just don't have a basic pass and you should be fine. I'd concentrate more on keeping your coins secure and accessible only by you more than how complex your password is.
Easy passwords could be brute-forced easily. Strong passwords are very important.
It doesn't have to be easy, but read what I actually wrote because strong passwords don't mean shit if you're not careful. Nobody should ever have access to your wallet other than yourself, but if you're not careful you wont be careful about keyloggers either most likely.