Currently, I train educators how to use Promethean Interactive Whiteboards in the classroom. Because I'm on various campuses throughout the day, it can be difficult to get to teachers and "show" them how to do something. Jing allows me to shoot a quick tutorial, get the link and email it to them. Take a look at one I've made!
And for those of you who use Twitter in the classroom, Jing allows you to post directly to your Twitter account!