I'm a human...
On Earth...

And I use the combonation of RealWorld Cursor Editor, the greatest cursor maker to exist, and the free version of CursorXP, which I use for breaking the 'rules' Windows sets for cursors.

It allows for seperate resize cursors, different cursors when you click (i.e. a laser fires into a gun crosshair when clicked). It lets you use PNG and BMP images as cursors, letting you have custom sizes (as I type this, my cursor is 500x500 pixels, and has not been resampled to 32x32).
It also supports .cur and .ani, AND lets you pick the angle of shadow generation, the shadow doesn't always go the same way. It does a lot of kewl stuff like that.

And if you want to turn CursorXP off, just hit ctrl+shift+C.

So there's our lesson for the day - RW Cursor editor + CursorXP = Cursor bliss.