Director Neill Blomkamp shot the first Citroen 'Transformer' spot before making the short film Alive in Joburg which inspired his work on a Halo movie project, which eventually morphed into the Peter Jackson produced District 9.
I've also put a link below to his 'Yellow' adicolor spot.
http://www.apple.com/trailers/sony_pictures/district9/
http://www.youtube.com/watch?v=YZ1vHRs_EOs
http://www.youtube.com/watch?v=Jmd8BDiB-qU