At one of our favorite Sunday places to eat as its the only place open on Sundays, they have a special month sandwich called "Bacon Blue". Its a hamburger cooked to your preference, then topped with sliced of cooked bacon and then topped with what looks to be blue cheese salad dressing. Its out of this world and I'm not a lover of blue cheese but I do like it from time to time. My next meatloaf I'm going to try this for the topping. As to what I usually put into my meatloaf as I don't really care for hamburger at all, I find adding worstershire sauce helps give it some zing. I also add whatever is in my spice cabinet........basil, parsley, salt/pepper, an egg and maybe bread crumbs if I have any available. If not I'll open up an older box of stuffing mix.