Anywhere dark and clear, preferably in the mountains or on beaches away from the city. Skyline Blvd has worked well for me.

Probably somewhere on skyline blvd (highway 35). There should be less ambient light up there.

As everyone else said, Skyline Blvd.

You can see them from the city tonight. I saw one just now from my apartment in the Mission. It's unusually clear outside.

I just saw one from my balcony in Mountain View, so if you're too lazy to hop in the car, there's still hope. You'll get better views away from the light pollution, though.