http://www.theunderdogs.org/index.php
This site features not-so-common, older PC games. I have yet to try any of them, but it looks pretty interesting. All of the games have reviews. Most of the games have manuals and screenshots.
One thing that isn't clear is wether these are the full games or just shareware versions. If I wasn't so lazy right now, I'd download a game and try it out.
[ 07 June 2001: Message edited by: adidas ]