I've gotten stuff from their parts guy, David, and it has been a great experience. He's given me pretty good discounts (matched some of Dave B's prices, but only talk to him and no one else) and has also gotten stuff for me overnight, although not directly to me; he has it overnighted to the dealership for me to pick up. But its 10 miles from my house, so I didn't mind driving over there to pick the stuff up.
He seems pretty knowledgeable, but I've only spoken to them once each, so I can't conclude much about the advice aspect yet. I still trust Dave B. more in terms of getting advice.
For those of you who actually go to the dealership for servicing, they also have a nice lounge with a plasma TV.
Btw, I still get most of my OEM parts from Dave B. but there are certain things that I need relatively quickly or that are expensive to ship, which is why I looked for a good local parts department.