Since writing about how professors are finding celebrity on YouTube, several people wrote in to point us to other efforts to offer lecture videos online. So here are a couple of more, with some updates on what they are up to:
* Research Channel: This non-profit consortium of colleges and universities broadcasts video of campus lectures and presentations in a variety of formats. Its largest reach comes from its satellite and cable-TV channel, which reaches more than 30-million homes in the U.S. But the group has long had a Web presence as well, and its leaders say the online audience is growing rapidly. Amy Philipson, executive director of Research Channel, says to look for the channel to offer its videos on YouTube soon. And she says they’ve recently set up a page on iTunesU, the educational section of Apple’s iTunes Store.
* UChannel: Princeton University’s Woodrow Wilson School of Public and International Affairs runs this Web-video network that pulls together audio and video recordings of campus talks. The effort started back in 2005. Donna M. Liu, director for strategic initiatives for Princeton’s Woodrow Wilson School, says that UChannel was on YouTube long before the University of California at Berkeley set up its channel there. And the group even offers a Facebook application that pops lecture videos into your online social profile.
* DoFlick: On a much, much smaller scale, recent graduates of the University of Maryland at College Park set up this site featuring instructional videos about science and engineering. One of the founders, Luis Corzo, says the site is getting about 5,000 to 10,000 visits per month. One of the stars of the site so far is Richard E. Berg, a professor of practice at College Park who produces videos of physics demonstrations.
Finally, I produced a short video report with footage from some of lectures featured in my previous article.
What’s your favorite lecture video online? —Jeffrey R. Young



