I used to subscribe to Jon Udell's blog and for some reason I stopped. I think I'm going to start again. Jon isn't a librarian on paper, but you may remember from a nifty little tool called Library Lookup.
I just learned that he's starting to push a concept he's dubbed as "Screencasts", which seems to me to be a generic term for these Viewlets and Captivate projects I've been going on about for so long. In a nutshell, he says, "show, don't tell". And he's got 22 of these things up here to prove his point. No, they're not all library-related, but you will learn something by watching them, and they will convince you you should be considering this form of instruction to reach your distance students!