Argonne

• Wildlife around the lab.

Computer's World

• Illegal prime. Numbers can contradict the law?
• A C program that prints its own codes. It was said to be the shortest.
• Boid Ant Simulator. A simulation illustrating how ants find food.
• The Best of the 20th Century: Editors Name Top 10 Algorithms.
• SCIgen - An Automatic CS Paper Generator. Would Turing consider this a joke?

Math

• The shortest math joke ever: Let epsilon < 0.
• The On-Line Encyclopedia of Integer Sequences.
• Collection of olympiad problems.

Cool & Fun

• International high IQ society's intelligence tests. Test yourself :)
• studioaka. Cool demos and videos.
• VLADSTUDIO. Nice desktop wallpapers and tutorials.
• Open Clip Art Library. Cool clip art drawings.
• Line Rider. A flash toy. Well, the author said it's not a game.
• phdcomics. You know, that is the PhD life of geeks.
• xkcd. A webcomic.
• Chrome Experiments. All what we need is just a web brower.

CG

Computer Graphics?

• Visual illusions. Don't get dizzy.
• Recognize what it is? Compile and run.

Or Computational Geometry?

• Geometry Algorithms. An archive of algorithms on computational geometry.

Or Conjugate Gadient?

• An Introduction to the Conjugate Gradient Method Without the Agonizing Pain. A popular reading.