I would suggest the Panasonix Lumix LX3.
Although the newer LX5 is out already, I dont think the differences between the 2 models is a reason for an upgrade.
I use my LX3 sometimes as a back-up cam and also have used it in actual shoots.
I like this type of P&S cams because they have hot shoes. I can use my SB's on the LX3 and also my trigger for multiple flash set-up.
Aside from that, LX3 lens are made by the legendary Leica company, has a focal length equivalent to 24-70, and an opening of F2.0-2.8.