My nominations for San Francisco:
1. First Crush in Union Square. Nothing particularly bad about the food (and the wine list is just great). However, the service on my three visits ranged from just OK to extremely bad. The wait staff was very slow (my date and I finally left after 45-minutes without menus). Also - any restaurant that makes you wait more than a few minutes beyond your reservation time will always be at the top of my 'avoid' list. I think they did this thinking we were tourists who would never be back.
2. Market Bar in the Ferry Building. Nothing special for a pretty high price.