OK, I'm no great shakes at photography and this was just an after-being-out-for-dinner grab bag. I would have liked to be a tad earlier and in a slightly different location. I was using the K-r with the DA35Ltd.
ISO 200, f/4.5, 1/200
Did some post processing to lighten the buildings... everything in foreground is black in the original.
ISO 800, f/2.8, 1/60
ISO 3200, f/7.1, 1/13
I'm amazed at how well the dark scenes render with little noise. Yes, there's still some there, you'd not expect to get away with none, but so much better than my poor old K200D.
After these few shots, I'm feeling very comfortable with the K-r already, its an excellent bit of kit, and I cannot see it meeting the same fate as the K-x I bought early in 2010 (onsold in under 6 months). It feels like a fairly significant upgrade from that, and from the K200D. No regrets about not getting a K5