Does Truecrypt have the capability to provide a password that ruins the secret? You could give your tormentors a password that once used deletes or makes the protected content permanently inaccessible and yeah they'll still beat you to death, but now they can never have what they wanted from you.
Contrary to the downvote and claim of implausibility, steganography does exactly that. A partition could easily contain extraneous data which could be used to hide and encrypt a message.
What they neglect to consider is that for the vast majority of truecrypt users, the government will not investigate their computer at all. In this case, it is a better strategy not to use a hidden volume, since it is more work. And most people will always choose the easy way.
Actually, even if you don't want to use a hidden volume, according to game theory the correct solution is for the user to always have a second volume and for law enforcement to continue torturing the user until they divulge their second volume (or die)
They'll just keep hitting you with the wrench until you give them the second password. Sucks if you don't actually have a second encrypted partition.