1) I think Mythbusters did a very good demonstration of static vs. dynamic friction on their banana peel episode.
2) I once had a car with 3-way ABS, individual front wheels and both back wheels together. In a lockup on a slick surface the front would go straight and the back would swerve. In my car now with 4-way ABS, it goes nice and straight to the stop. In my car with no ABS it gets really fun.