This past IAP I taught a short class on Emacs ("Being Productive With Emacs") at MIT. It was similar in content to the class that I taught in 2007, although I pared down the material a bit.
I've posted the slides online. You may use the slides under the terms of the GFDLv1.3+ or the GPLv3+.
(I made the slides using S5, which is pretty sweet. It lets you make moderately professional looking DHTML slides in a text editor without much pain.)