The MacBooks clearly have a webcam. And I'm wondering if I can make videos with them? I know all about PhotoBooth so I'm wondering if I there is some way to record video, with voice, possibly using iMovie?
You bet. Fire up iMovie, and look for the camera/sissor switch under the preview screen. Right click on the camera and select your iSight. From there you can record just like you would capture from a DV camera.