a webcam?
What are you trying to do?
I'm hesitating whether to get a HD-capable one or not depending on prices.
...
I would like to make a small documentary.
well if you have a laptop and a webcam already it works out cheaper
I have a MacBook Pro. However, I need a camcorder because some stuff will need to be recorded on the move.
If you're gonna ask for advice, at least give details. What's your price range?
do you plan to shoot porn or giraffes?
For something better I'd go with a Canon Vixia HF200