design answers
Offers a variety of very tiny fonts for web design. Available in Mac or PC formats.
WhatTheFont
Upload a font graphic (gif, jpg) and this site will identify the typeface used!
04 Bitmap
Another site that has some good fonts
Silkscreen font
A classic small bitmap font for use in small point sizes.
The Scourge of Arial (Article)
An interesting article highlight the history of Helvetical and Arial. Another good article on the same site is properly titled "How to Spot Arial."