Anywho...that being said, I think Jing is especially wonderful! I love that you can discuss how to do something using your computer, your "know how," and your voice! This seems especially great for students in class who might not understand how to use a certain application (take Prezis for example) that I present in class. Maybe there are a few students who need more of a one-on-one explanation. This is ideal for explaining things to students who may need a little more time.
Another excellent application of Jing's screencasting is showing students how to use citation machine and embed citation machine information directly into a Works Cited page during our research units. This is a multi-step process that many students do not get the first, second, or third time around. Any application that involves multiple steps would be easily accomplished using Jing screencasting. That way, students can listen as many times as they need to in order to understand.
A third application using Jing would be for professional development for teachers. As a technology leader in the building, teachers--especially those who struggle with technology--need to refer to "how to" type instruction more than once. Any kind of technology application that might be useful to teachers can be created into a screencast for them to view at their leisure as many times as they wish. Quick tutorials on how to navigate i-Respond, for example, could be very beneficial.
I'm sure this is just the tip of the proverbial iceberg using Jing. This is one of my favorite applications to date! I think it can be very useful for me both as a teacher and as a professional. I will definitely utilize Jing frequently.