Eric Harshbarger's Lego 
Numerous scuptures and mosaics created from Lego. Also, features links and a list of old sets.
http://www.ericharshbarger.org/lego/Henry Lim's Lego Sculptures
Large scale sculptures including a 3 metre long stegosaurus.
http://www.geocities.com/droideka13/LEGOSculptures.html
Planet Brick
A desire to learn basic techniques for 3D computer graphics led to the creation of the Earth made from Legos. Lists resources, images, and provides history of the project.
http://www.butera.org/planetbrick/index.html
Legoland Art Gallery
Browse seventeen thumbnail Lego watercolors.
http://www.asciipr0n.com/archive/0005/index.html
Konzentrationslager
Information and pictures of the controversial concentration camp models made from Lego by the Polish artist Zbigniew Libera.
http://users.erols.com/kennrice/lego-kz.htm
