I spent my lunch hour on this uncharacteristically sunny and warm June San Francisco day at Top of the Mark.
I was there for a day of email newsletter usability learning, but the view from our lunch table was the highlight of the day.
Unfortunately, they had a limited lunch menu (pick a prawns wrap or an ahi tuna salad). The salad was fine, but tiny. I'd be most inclined to come back here for drinks... and the killer view.