I have a few brain wallets setup.  Despite the doom and gloom naysayers I am confident the method I use is secure.

First off, I have a two part generation password.  The first part is a password that I know followed with a 2 digit sequence number.  The second part is generated by a yubikey in static password mode.  That puts my brain wallet generation around 75 characters long.  I don't see how that could possibly be hacked.

There is a document on the yubico.com website that is a tutorial on how to setup a yubikey for use with truecrypt.  The same tutorial works as a guide for how to do what I'm talking about.

Even if the yubikey gets confiscated the password is still required to generate the wallet information.  There is information in the document on how to backup the information for the yubikey if it gets lost.  Again, password + yubikey is required.

Easy for me to access wallets, hard for anyone else.