The Lego Photo app for iPhone poses a serious threat to future sales of real Lego (the perfect petrochemical toy.)
Before you download it and start to enjoy the virtual pleasures of transforming your photos into Lego bricks, spare a thought for your petchem comrades in the ABS business. Today it's Lego, tomorrow the downfall of the whole polymer industry.

Here is a cool YouTube video: http://www.youtube.com/watch?v=zX09WnGU6ZY&feature=youtu.be
Somebody has made a working printer out of a felt tip pen and Lego.
This is also trending on Twitter, so it's very popular :-)