I was in Sunnyvale, near the "Blue Cube" at the south end of Moffett Field when the quake struck. I was on the second floor of a large office building, talking to my wife on the phone, who is back in Nova Scotia.
Suddenly I started shouting, and she said "What, What?" and I said "Earthquake! I better get out of the building!"
Oddly, I was the only one who evacuated. But I remembered the October '89 Loma Prieta quake very well, as I lived in Santa Cruz at the time, and there were many aftershocks. I was concerned an even bigger shock might hit.
When I got outside, my cell phone wouldn't work, so I had to call my wife collect from a payphone to tell her I was OK.