Airport of Choice?
SFO - Consistent flights at all hours from just about every airline. Delta, United, and American (the three biggies) all have heavy traffic here. The food is great, especially in the United terminal. However, traffic can be backed up, the airport is a bit difficult to navigate, and the staff can be rude. Furthermore, it seems as if security is always a bottleneck, no matter what time of day or night, and this is the only airport of the big three where I have experienced delays.
San Jose - I wish that they had more flights and serviced more cities, because this is by far the most efficient airport I have ever seen and the closest to my house (which, granted, is only a criteria for me but it is still important!) They see lots of flights in a short of time, they board from both sides of the plane (what a novel idea!), their staff are friendly and although the food selection is pretty lame, I have never been in there long enough to care - and they do have a good burrito place.
Oakland - Bigger than San Jose but still very efficient, I have only been there once so my take is not quite as accurate. It's a bit further off the highway than SJC and a LOT further than SFO, but long-term parking on-site is dirt cheap. I've made it curbside to my gate in nine minutes, and the crew there is sharp and friendly. It is about the same distance from my house as SFO but a bit more difficult to find than the others. The one time I went was on a Sunday morning (primo travel time), but it was still very very dead.
Sacramento, Santa Rosa, and Monterey all have airports as well, but those are a little far from me. Hopefully this helps if you are making travel plans anytime soon!