I go out and get food somewhere between 11:30 and 12:30. depending on when I get back/how sociable i'm feeling that day, I'll either eat alone or with my coworkers (the whole company is like 7 people). if I'm back too early, don't feel sociable, or have a bunch of work to get done, I'll just stay in my office during lunch, usually on eoff/facebook/twitter/etc. our company lunches can be fun but often last over an hour whereas I can slack off for 30-45 mins and still have more overall productive hours.