Possibly what blew my mind the most last year was attending and presenting at CodeMesh, the conference line-up was impeccable, and of course, the interesting bits happened when talking to people there. Kudos to the organizers for a great conference.
Some pictures and links:
David Turner’s talk is available via this paper “Some history of Functional Programming Languages”
Parallella Board, website
Yan Cui’s slides
Phil Trelford’s video on F# for Trading, to be honest, even if you are not into trading, this is pretty good.
The talk by Dave Thomas and Jose Valim was pretty cool, no video or slides available at the moment :D.