I am potentially moving to SF area, working around Sunnyvale.

I have a car, but hate commuting. I also enjoy restaurants and nitelife.

If I don't want to commute, what is a reasonable area to live around Sunnyvale, and what are the bars/restaurants like?

If I do commute, I assume San Francisco proper is the place to be - if so, what is a good area to live? I stayed around Union Square a couple of weeks ago (Monday nite though), and it was pretty dead. Jeanty on Jack's had great food.

One thing I heard was that the Marina area was a lot of fun - how is that for bars/restaurants?

Thanks