Three good talks found me. The first is "The Art, Technology and Science of Reading" from this week's MIX user experience conference. The talk is a really nice research-driven presentation about reading from a display, fonts, and how our visual system works. It's DS07 on the list of conference videos. The presenter's blog is here.
Not as research driven, is a talk by the always interesting Seth Godin about "Why marketing is too important to be left to the marketing department".
At school we've been talking about classroom or lecture capture systems. We currently use NCast, as did CENIC for their conference this week. Most of the presentations were captured and are available for viewing. I highly recommend Ed Lazowska's keynote about e-science it was 11am Tuesday. He's given similar talks before, but he's definitely worth watching if you haven't.