Came across one of those posts that just has to be shared yesterday.
It was too big to include as a post so I put the whole lot on a new page. It is on the menu bar above the posts next to the Web 2.0 Tools page. This list of tricks is well worth a look. It not only has tricks and tips but Google Apps that are worthwhile in a classroom setting. You probably use some of these already but there are many there that I had not thought to use in a classroom.