Lego Toy

A toy plastic building-block kit(s) from the Lego company - http://www.lego.com

'Lego' comes from 'leg godt', which means 'play well' in Danish.

They are often used as an analogy for software construction because one can snap them together easily and use pre-built snap-in components like wheels, doors, gear connectors, faces, battery motors, etc. DouglasCoupland's novel "MicroSerfs?" describes a fictional software company called OOP that produces Lego inspired software.

Lego players and theoreticians

LegoRoboticsWiki - it's about controlling your LegoRobots? with SmallTalk!
KEGO (http://lcs.www.media.mit.edu/groups/el/Projects/constructopedia/kego.html) - A formalization of the Lego "language"
ArtOfLego - Lego fundamentals research
LegoPatternLanguage
Some amazing sculptures and more links: http://www.andrewlipson.com/lego.htm
- Including the "Thinker" by Robin, has to be seen to be believed
And some more at http://www.henrylim.org/LEGOSculptures.html
- Including a functioning harpsichord

Lego Mindstorms

Lego-related software (not LegoMindstorms)

LegoPostScript
There are specialized "CAD" programs just for building virtual Lego models; afterwards, the models can be rendered with POV. Search for MLCAD and BlockCAD!

Legos and software organization philosophy

LifeIsaBigMessyGraph

How about a LegoWiki?, where instead writing pages you can construct buildings? Now wouldn't that be cool...

Be careful with this LegoToy, for embedded in it is the message: "GoTo". Ooh! Evil SubliminalMessage?s!

Lego is sometimes called the "second greatest toy". The first is something I can't say in front of the kids.