Airplane Installation in Tate Britain Modern Art Museum by Fiona Banner (created a lot of puzzled comment. I felt it showed the relationship to birds, and how discarded hi-tech objects can look like any thrown away thing.
Doris Salcedo (Columbia), Shibboleth, Tate Modern -Transforming objects that should be familiar and comforting into things of horror, Salcedo draws attention to the grisly facts that underpin everyday existence in her society.
Green House by Kyung Woo Han These chairs appear to be floating but in fact its all an illusion. The chairs are actually an artistic experiment with wire and paint that shows them as if they were floating around a flooded rom.