I always take the lane in intersections and wait my turn in the line of cars just as if I were a car (unless I'm turning right). I've found that the drivers around here treat me better if I do that. Maybe they figure if I'm behaving like a car, they should treat me like a car and give me the same room and courtesy they'd give a car?
Also, many of the bike lanes in my end of Seattle "disappear" before intersections to force bikes to take their appropriate lane before the intersection. I think this trains the drivers to watch for bikes coming into the lane at intersections to some extent.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson