The force unit is intended to teach students as much about how to solve problems as it is intended to teach them about force.
Play pendulum.wmv in slow motion (in Windows Media Player click on Play, Play Speed, Slow) to see a pendulum speeding up and slowing down.
Universal Gravitation.ppt uses a movie to show gravity at work on large objects in space. It also derives the acceleration due to gravity on earth's surface from the radius and mass of the earth.
Use force table lab.doc to teach students that they can use physics equations to accurately predict how to cancel out forces.