I went out after work to look at the Webb Bridge in Melbourne after sunset, with a view to coming back later with a DSLR. Unfortunately, lacking a really wide angle, you can't really get interesting shots inside the bridge with the G11. I'll need to make another visit with the 5DII and the 17-40mm + 15mm fisheye. Good job I didn't just decide to take the 7D, as I don't have a lens wide enough for the 7D.
These photos were taken using the built in 3 stop ND filter, with the G11 mounted on a Gorillapod, and using a cable release. Exposures were mostly around 13 to 15s, aperture around f/3.5 to f/5.
Another point for a future visit is that I will need to do it at a time when there are fewer cyclists about, and take a 6 or 10 stop ND filter to blur away the pedestrians.
Despite the fact that there are now better cameras available, the G11 still copes quite well.