PointerFocus - Allows you to highlight the cursor using either the toolbar or hotkeys.
PainterMouse - Enhance the mouse cursor for presentations and demos
SpotOnTheMouse - SpotOnTheMouse is a mouse pointer and keyboard action visualization software.
Mouseposé - Mouseposé is the indispensible mouse pointer highlighting tool (aka "virtual...
Kokomite - Add a semitransparent circle -or ring, if you'd rather- to your mouse pointer
Carnac - A utility to give some insight into how you use your keyboard/