I eat roughly 500-600 calories in the morning for breakfast. Our culture has things backwards. Calorie consumption should be weighted more towards the hours we are most active and those before them.
Anyhow, raisin bran really isn't that good for you and I rarely eat cereal nowadays. Oatmeal is amazing stuff. Not the crap in packets... the real stuff. No matter how much healthy cereal I eat I am hungry an hour later. Not with oatmeal.
However, my favorite breakfast at the moment is a protein shake followed by a slice of toasted homemade oat bread with two scrambled eggs covered in hot sauce and a banana later. *drool*