Andrew Hicks, a mathematician at Drexel University, have created a mirrored surface that is bent in a way so the image you see is not reversed (not a mirror image).
From the New Scientist:
By calculating how to vary the way each of tens of thousands of points on a mirror's surface reflects light he can create mirrors that do amazing things. For example, reflecting text without reversing it or capturing a full 360ยบ scene without distorting objects.
Link - via geekologie
From the Upcoming ueue, submitted by philosophile.
a lot more work and this could be used to create invisibility cloaks surely.