I have used Jing on a few occasions and found it helpful for all those annoying "how to" questions. By setting it up once on looking for an Email addresses for instance set and just pass along the link that goes along with the web site.
I also have been using Jing in the class for tutorials for some of my kids, I created a series of iMovie Lessons on a Google Site. The only problem I had was that my kids quickly used up my 2 gig bandwith. So I bought 200 gigs for 10.00 a month.
I've been using my bamboo tablet with jing video to create math notes for my students. They watch them at home and then we do practice in class the next day. We cover any questions they had and review highlights and then practice. This allows students to assess their own knowledge and decide which task they are ready to complete that day. I have several levels of activities students can choose from after we've covered notes.
I too have used my Bamboo Tablet along with my mimio board to create "How To" videos and post them on Angel. I find this comes in handy for those students who say, "I couldn't do my homework because I didn't get it... or I forgot how to do it." By posting these examples of how to balance an equation, write a nuclear equation, calculate a half-life, etc. it is like having their own personal teacher at home!