One is the loneliest number there is. Well, unless you clone yourself! This sweet video will show you how to do just that with Apple's iMovie. You'll need iMovie 11, or iMovie 09. This technique is also possible by using other video editing software tools as long as they are capable of doing blue screening or green screening. In addition, you'll need a sturdy tripod that you DO NOT move. This is essential to creating the effect. If you move the tripod, this effect will NOT work, or come off as convincing. Also, of course, you will need a video camera. So, if you've got all those things, hit play, watch the video and learn how to double down on yourself!