My big lecture class is on WebCt, one of several packages that universities install to facilitate the webbing of classes--to store notes, facilitate discussions, to post announcements and syllabi, etc. I use my webct stuff to post the slides from classes, the system automatically posts recordings of my lectures in the big class (lots of debate among professors about whether this is a good idea or not), and provide a forum for students to engage in discussion.
Tomorrow is the final exam, so tonight they are posting all kinds of speculation about the final exam question. It has been entertaining to follow the discussion. Now I have more ideas for next time, although I will not be accused of lacking imagination after this one. Insert maniacal laughter here.