Well this is handy…
If you ever found that the way Microsoft Windows handles mouse acceleration and thought "how do I make my Mac mouse move like it does in Windows?" heres a great free app for Mac to change it (some people just can't get used to the way the Mac mouse moves and prefer the windows way).
This first app only works for Snow Leopard or older, but there's a Lion alternative below:
Speed up you Mac mouse with Mouse Curves for Snow Leopard, Leopard and Tiger:
Or: You can increase the Lion mouse speed with Steermouse:
Now your OS X is more like Windows, don't you feel a little bit dirty?