I never knew favicons require such care and dedication to make them more appealing to our eyes.
This post on miha's blog shows how YouTube's favicon can be improved by using sub-pixel rendering. There are also improvements made to a few other favicons.
Then there's this post by the same author that shows a work-in-progress subpixel typeface.
Sub-pixel rendering is a technique used to increase the apparent resolution of a LCD display. Pretty neat!