Wow Andrew, your HDR night city-scape stuff just blows me away.

I'm wondering do you just pull in the exposures using Automatic merge HDR in CS3 or do you apply a more manual approach?
I had a go with some simple AEB triplets I took of Victoria's Parliament building early AM (see attached) when I was down there on business last week. In some ways the effect seems "flatter" than the individual frames and appeared noisier in the shadows. Any tips?
cheers,
Rob