I heard about the first through IDPI’s blog. It’s a a national press club discussion with communication directors from the Giuliani, Romney, Biden and Thompson campaigns; video of the event is available here in Windows Media format.
The second discussion was hosted by the E-Voter Institute; the panel includes the internet campaign directors for the RNC and DNC. The discussion was broken into segments and uploaded to Google Video; a list of the clips is available here. If you’re interested in the results of the Institute’s latest survey of consultants and the public, you can download it directly from here.