One of the biggest shocks to me when moving to the Bay Area is the difference in social norms and acceptable behavior. I grew up in Texas and went to college on the east coast. For the first few months after moving out here I was in awe by some of the things people would do and thought were acceptable. In fact I'm still in shock by many of these things but used to them by now. From some of the things I've seen managers do in regards to relationships with their employees and behavior at office parties to an entire section at AT&T park cheering when an opposing pitcher gets hurt and pulled.

Furthermore I also found it much harder to communicate appropriately as social cues seem a bit different. I have at many times found myself in a conversation (or lack there of) filled with awkward silence.

edit: grammatical correction