Encryption software

There're many packages out there each claiming to perform the best 'military grade' encryption. However I have my doubts. So which program in your opinion provides the most secure encryption to date?

TrueCrypt is very widely acknowledged - plus its free, open source which is a huge bonus.

Just be careful with strong encryption though, because if you lose the key you're pretty much screwed! Keep it secret, keep it safe.

Props to anyone who can catch the above reference!