Gary Danko is awesome. I think the best meal I've had in San Francisco is at Masas
http://www.sanfranciscochefs.com/cli...sas/rest_page/
Fleur De Lys recently reopened and is supposed to be very romantic:
http://www.fleurdelyssf.com/splashpage.html
As KC said, The French Laundry is dreamy. In fact, I think he felt like he was dreaming when he looked at the bill ;)
Its nearly impossible to get in but if you are in the area you can call and see if there are cancellations.