http://en.wikipedia.org/wiki/%C3%86thelred_the_Unready Wikipedia on Æthelred the Unready, King of England.

http://tanasinn.info/wiki/Stalking_Haruhi_Suzumiya Someone took pictures of the real-life locations in the anime The Melancholy of Haruhi Suzumiya.

http://www.xbox-linux.org/wiki/17_Mistakes_Microsoft_Made_in_the_Xbox_Security_System This is an incredibly comprehensive article detailing the architecture and security mistakes in the original Xbox. Because of these oversights people were able to mod the Xbox. This article is a must read.

http://www.ibiblio.org/harris/500milemail.html An anecdote about troubleshooting a system where sending emails while over 500 miles away from the company headquarters did not work.

http://www.viemu.com/a_vi_vim_graphical_cheat_sheet_tutorial.html This is a pretty extensive cheat sheet showing what each key does in the VIM text editor.

http://en.wikipedia.org/wiki/Lichtenberg_figure The tree-like shapes that electric discharges create. This is the kind of thing you see on lightning victims.

http://community.livejournal.com/thrifthorror/516306.html I love the first painting. Amazon links to prints are in the comments.

http://www.youtube.com/watch?v=6V2eCFsDkK0 This is a demonstration of the physics of rapidly cooled glass.

http://www.youtube.com/watch?v=dBb0zSmNevY The music video to You Could Easily Have Me by Metronomy.

http://en.wikipedia.org/wiki/The_Ambiguously_Gay_Duo All about the Ace and Gary cartoons on SNL.