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.
I bet it would be EXTREMELY odd to look in to this thing and try and comb your hair or something after a lifetime of reversing mirrors.
http://www.truemirror.com/
Seriously, my mind is blown on this concept. I did not know that was even possible!
I like #2 for practical reasons: widescreen driver's-side mirror! I'm always nervous about missing drivers in my blind spot(s), ever since a high-school fender-bender. This should be standard equipment in all cars.
a lot more work and this could be used to create invisibility cloaks surely.