I stumbled upon some some great explanations of recent events from martketplace.org (as in “Hi, I’m Kai Ryssdal and you’re listening to Marketplace on NPR.)
They have a number of videos by Senior Editor Paddy Hirsch. The stick-figure-on-white-board lessons are great primers on what is going on. In the short (5 minute) videos he touches all sorts of terms acronyms you hear on a daily basis but might be a little (or a lot) fuzzy on such as: CDOs, naked shorting, CDSs, The TARP, margin calls. You can find them all here.
I think the most enlightening one is on CDOs (below):