Meet The Robotic Lawn Mowing Sheep (Geeks are Sexy), which was designed in homage to Philip K Dick's novel Do Androids Dream of Electric Sheep, which was bastardised, but effectively, for Blade Runner.
I don't really think I need to add to that.
Link to Geeks are Sexy article.
Link to Blade Runner on IMDB
Link to Androids on Amazon
Link to Wallace and Gromit official site (any excuse)