The latest webcam we have had the opportunity to trial in science lessons is the IPEVO Point 2 View. It is a 2 megapixel USB camera on a weighted adjustable mount. It is compatible with both Mac and Windows machines. The image quality is fantastic for the price (approximately £40). It can take still images and can also be used much like a visualiser. It can also be used as a webcam and will work with leading Internet calling applications.