geek

http://my.ilstu.edu/~jrcarter/ice/diurnal/extrude/ Forming tiny ribbons of ice by freezing water in pipes with a slit in them.

http://www.youtube.com/watch?v=m1pchpDD5EU An electric organ wired into an 8-bit synthesizer.

http://www.visual6502.org/JSSim/index.html This is a 6502 CPU simulated at the transistor level in your browser!

http://en.wikipedia.org/wiki/Pixel_art_scaling_algorithms Multiple algorithms are available to upsample pixel art (frequently found in old video games). Wikipedia's article compares several algorithms and shows some impressive results. This paper was also recently released and also gives excellent results. The supplementary material link lets you visually compare different algorithms.

http://www.flickr.com/photos/pepa_quin/3652206565/in/set-72157613753398532/ Lego reproductions of Starcraft units.

http://www.xtranormal.com/watch/6995033/mongo-db-is-web-scale Shards are the secret ingredient in the web scale sauce.

http://www.youtube.com/watch?v=Wi4g_U0hoOg Behold the mini cannon!

http://www.boingboing.net/2009/09/23/lamp-that-runs-on-hu.html This lamp uses a drop of blood to power itself.

http://www.dealextreme.com/p/mini-tritium-glowring-keychain-10-year-green-glow-6830 A keychain with a sample of radioactive material so it can glow in the dark.

http://en.wikipedia.org/wiki/The_Ashley_Book_of_Knots The book on knots.