One of my favorite breakfasts is the egg sandwich. You can even make your egg sandwich any way you want it. My favorite thing about an egg sandwich is how fast they are to make. You can make them even faster by making a couple days worth in advance, place everything on a plate, place it in the fridge, then just layer and microwave in the morning.
You can make it healthy by using whole grain bread or English muffin, Egg Beaters or egg whites, low-fat cheese, and turkey sausage.
You can fatten it up by using white bread or English muffin, regular cheese, real eggs, and high fat juicy sausage or bacon.
My personal favorite is the "happy medium." I use a sourdough English muffin, low-fat cheese and turkey sausage. As for my eggs, I always have to use two because Bubba LOVES eggs so I have to share.