Star Wars Revenge of the Brick is a short star wars animation entirely done with lego bricks. It´s featured on the offical lego website and looks extremely impressive. If you care, take a look.
8-foot long Star Wars Attack Cruiser
Now this one is huge. The attack cruiser was build by Erik Varszegi exclusively for display at Star Wars Celebration III. It even got a framed certificate of authenticity by George Lucas himself.
Stem to stern the model is 97 inches long and 47 inches wide, weighs over 150 pounds and is created using over 35,000 pieces!
Star Wars Episode IV in Ascii
The first 20 minutes of Star Wars Episode IV in Asciiusing Java. This one is well done and worth a look. Great animations for Ascii, never thought something like this would be possible.

