I just found this great thing that changes your arrow cursor into something like a lightsaber, a gun, or a christmas tree.  It's called cursor mania (cursormania.com), and is free.  The cool part is, they don't evem want your e-mail or anything, which normally ticks me off.  Some cursors are animated, and others are normal.  Mine is a gun that spins around and shoots at you.  Actually, at school, three other kids and I changed our computers' cursors to bananas, and got in trouble.  It was pretty stupid, but it was fun doing it.