Logitech HD Webcam C270

HD video calling (1280 x 720 pixels) with recommended system,
Video capture: Up to 1280 x 720 pixels,
Photos: Up to 3.0 megapixels (software enhanced),
Built-in mic with Logitech RightSound™ technology,
Hi-Speed USB 2.0,
Universal clip fits laptops, LCD or CRT monitors

$49

Microsoft HD Webcam 3000

Microsoft True HD WebCam, 720P Resolution.

$39