Picked up a new, odd camera today, the Praktica MTL3, made in the German Democratic Republic (That's East Germany to you, capitalist pigs!).
Its an odd SLR... the shutter button is on the front and not the top. It also has the least stealthy shutter and wind noise ever.
But the craziest thing about it is that the light meter is powered by a PX13 mercury battery. And... the battery in this one is still good! 100% accurate compared to my other cameras. The magic of mercury!

PS if you want to see the trippy, bizarre commercial for this camera, look here. I highly recommend giving it a watch! http://youtu.be/ow4GAMUFHVE