Pixinator is utility software for Mac OS X to help easily identify pixel defects on LCD displays. Pixinator presents black, white, and RGB backgrounds to make pixel defects stand out, has an intuitive interface for instantaneously switching or smoothly fading between backgrounds, allows simultaneous testing on all attached LCD screens, and doesn't take up much space (only 48k!).
Please visit the website for more information on LCD displays and pixel defects. It also includes a list of LCD manufacturer customer relations numbers so that people can let these companies know that pixel defects are a serious problem and can encourage them to improve their, or their supplier's, fabrication processes.