The British military seems to be the fastest institution to develop and use the invisibility cloak that we discussed previously. John Pendry who wrote articles about similar systems is the main voice of science. See
On the picture above, only one half of the tank was made invisible. ;-) YouTube offers you a video with similar technology making Japanese guys invisible. ;-)
See also 11 preprints about invisibility cloaks on the arXiv. Be careful when you make invisible experiments with children.