Undo-tree handles all my undo'ing needs, and non-emacs users like looking at its strikingly elegant tree visualizer. (http://www.emacswiki.org/emacs/UndoTree h

Undo-tree handles all my undo'ing needs, and non-emacs users like looking at its strikingly elegant tree visualizer. (http://www.emacswiki.org/emacs/UndoTree http://www.emacswiki.org/emacs/UndoTree) Scroll down for screenshot. And follow-mode on a monitor turned sideways is pretty funny. Doubles your vertical space (good for eyeballing logs and data dumps).