I'd tell you about my passwords... but then I'd have to kill you.
I carry them about in two encrypted forms. First is an encrypted HanDBase file on my iPhone. Second is on my USB drive (Sony Microvault on keychain) using the password manager function of Encrypt Stick. Encrypt Stick software is not perfect but has a few benefits over free TrueCrypt - no need to have Admin rights for mobile use, on-screen randomized keyboard with blanking on mouse-down events (defeats key loggers and most other snoops from getting your master password), and a semi-integrated browser that leaves no local history and fills in user names and passwords with right clicks (again defeating key loggers).