Screenr is a cool app that is married to Twitter but also lets you connect to other parts of the web. What it does is let you record your screen movements in a resizable window and then upload it as a video. It pretty much begs you to Tweet it through its tight integration with Twitter, but you can upload from the admin to YouTube, or you can embed it in your blog, as I do below.
I made this screenr for a presentation at SLOSTC — Hope I get a chance to use it! — so there’s no sound on it because I’ll talking over it (I won’t have good speakers at the event, but online it would work well with voice).