Ok, I'm looking for a couple specific things here...
I've seen a couple plugins that will email you whenever a change is made to posts/pages, etc. The problem is that the one that does email the content of the changes, emails far too much (Email Post Changes). It always emails the entire page's content along with what was changed or added. It also doesn't monitor anything other than the main content, not anything like custom fields, etc. Would like to find a more well rounded plugin that does this.
Also, I would like to find a way to have some sort of notification system that I can integrate into my theme that will give a small notification of new content/changes. Have it only visible for 24 hours. Something like a little notification bubble, etc. Would also like to give it a time stamp for when the specific content was last updated. More specifically custom fields, which I use a lot.