What's the safest TrueCrypt algorithm and hash?
All ciphers offered by TrueCrypt (e.g. AES, Serpent, Twofish) are "impossible to break" to the best of current public knowledge. Which one of them will be successfully attacked first (if at all) is obviously unknown at this time, hence a matter of personal belief. The same applies to hash functions (SHA512, Whirlpool, RIPEMD160) — there are no relevant weaknesses known in any of them. The standard choice would be AES combined with SHA512.