This is a very thorough list of the most famous (read:best) and most influential demos: https://news.ycombinator.com/item?id=3840830
Demoscene - The Art of the Algorithms https://news.ycombinator.com/item?id=3840830
This is a very thorough list of the most famous (read:best) and most influential demos: https://news.ycombinator.com/item?id=3840830