Microsoft Corp. LifeCam VX-7000

Microsoft Corp. LifeCam VX-7000 is an "OK" usb camera. here's the amazon.com page with more details



Technical Details
Model: CEA-00001
Audio Input: Built-in microphone
Video Capture Resolution: 1600 x 1200
Image types: JPEG
Image Capture Speed: 30 fps

here's the lsusb o/p against this webcam:

Bus 001 Device 003: ID 045e:0723 Microsoft Corp. LifeCam VX-7000 (UVC-compliant)

It also works on linux. I used Lifecam VX-7000 to make video calls on skype on linux. I start skype as shown below, and it works great:

$ cat /usr/bin/start-skype.sh
#! /bin/bash

bash -c 'LD_PRELOAD=/usr/lib/libv4l/v4l1compat.so skype'

So in short, if you're looking to buy a good cam which would work in linux, go for VX-7000.