FuturePower,
Have you noticed that TrueCrypt is the target of most attacks on Full Disk Encryption? BitLocker is a close second if not first place in the "attack me" race.
Google "truecrypt vulnerability" and see how there are 311,000 results!! Also check out the Wikipedia page (
http://en.wikipedia.org/wiki/TrueCrypt). There is a reference to 'Security concerns' which needs to be seriously adhered to. While I also believe in the value and importance of Open Source, it's more important that the algorithms used to derive encryption keys are open and that the cryptographic libraries being used are FIPS certified.
With your history of positive comments on TrueCrypt, you probably work for TrueCrypt, so your posts sound a tad biased.