I administrate a couple of servers and do automation with both python and ruby at times.
I've seen some awesome Youtube videos of users with multiple open windows, logged in background chats, and deep code completion, all done with emacs. I'm currently using vi and would like to learn emacs.
Altogether doing away with any and all forms of GUI (suggestions for text browsing in emacs welcome) would be perfect in my current environment, especially for decluttering and focus.
Content similar to http://platypope.org/yada/emacs-demo/tutorial.swf would be perfect.