Im sorry- recording from isight in my macbook
In iMovie if you move the slider from cutting to importing it can capture video from the iSight camera.
In my MBP, I've got iMovie HD. I tried it, but it gave me an error. The camera cannot be find, although, I can see my face clearly.
That is odd. I've also got a MBP and I just tried it and it worked flawlessly.