Make Mac OS X mouse acceleration more Windows-like

Take a look at Mouse Acceleration Preference Pane.

Another new option is SmoothMouse. Its work on Mountain Lion and supports the Magic Mouse. Some folks are quite happy with it (discussion). I'm personally still deciding (but already think its better than standard OSX).

To turn off mouse acceleration entirely, run the following in the terminal:

defaults write .GlobalPreferences com.apple.mouse.scaling -1

This made it feel pretty Windows-y to me. Love Apple's trackpads, but the mouse settings are full of fail.

To turn mouse acceleration back on, change anything in the mouse preference pane, or run the command again with 1 instead of -1.