I usually try to sneak comment characters and sequences from various languages into my passwords. That way if I sign up for a new account somewhere and the webs

I usually try to sneak comment characters and sequences from various languages into my passwords. That way if I sign up for a new account somewhere and the website gives me some really unexpected output back after I click "submit" I know that I probably don't want an account there anyway. Plus I feel like there's a chance it could screw up some script kiddies scripts if he gets my password into a wordlist for some second-rate hacking tool.