A few weeks ago, Dan Murfet (Melbourne) gave a talk on linear logic and complexity, which was a follow up on his December talk. He has recently made a nice screencast of the talk. It gets into some work on subsystems of linear logic, particularly the work on stratifications of linear logic by Baillot and Mazza.

For the beginner in logic, Greg Restall has some short clips of logic lectures available on Vimeo: Intro Logic, Advanced Logic, and Modal and Non-Classical Logic.