If the MIT/Johns Hopkins folks can't/won't do your Crypto/Curve25519 audit for the bounty, I would have time later this month to do it (I'm DoctorEvil on Nextcoin.org BTW).
I already reviewed the primary literature on Curve25519/ECKCDSA, examined several implementations of both and am working on a clean room implementation of the relevant algorithms myself just to make sure I understand them 100%. As a bonus I'd make my extra implementation part of the deliverable. My implementation wouldn't be meant to replace the existing highly optimized one. However, since it's aim would be comprehensibility/correctness as opposed to speed, it would make writing ports easier.
Given my pseudonymous identity, I can't present credentials other than my online reputation ... so depending on exactly what the community wants out of this audit, there is that to consider.