Script (tie-able to a keystroke) that slows down the mouse for fine movements? Or app that does this? Sometimes when doing graphics work one needs to briefly slow down the mouse movement to make fine pixel-by-pixel movements. One can chance this setting in System Preferences: Mouse, but it then becomes too slow for regular size movements amount the screen. Does AppleScript or any other program allow you to switch this mouse speed quicker than using System Preferences? (Ideally this'd be in a way that could be tied to a keystroke through some method.)
Get a gaming mouse that allows you to adjust sensitivity on the fly