What's the BEST filling to have in a sandwich?

I would have to say pastrami with honey mustard, topped with a freshly sliced tomato and a couple sweet pickles, on asiago cheese bread. That is my ideal sandwich, no doubt.

i like honey ham with a slice of cheese, lettuce and tomatoe with pepperocinis (yum) with miracle whip and horseradish mustard all on lightly toasted dill rye bread! omg those are so good!

Lets see... Leg Ham and tomatoes Just plain tomatoes with salt and pepper Cheese and tomatoes A sliced boil egg with mayonnaise Cold chicken with mayonnaise Cold beef with tomato sauce Any type of cheese you fancy Any type of pate you fancy If you want to get real fancy... Take 2 slices of bread and butter them on both sides. Place some ham and cheese in your sandwich and fry both side of the sandwich in a pan. Then you have your toasts I like to slice a tomatoe on 4 slices of bread. Place some cheese on the top and melt the cheese under the grill. And of course... you have your toast with jam or honey.

These days, I opt for toasted sandwiches because... well.. for no other reason than that they taste great! =D I usually put leftover pasta dishes, meatballs or tuna with cheese, mustard & mayonnaise. It has to be on whole-grain bread though, because it's just so good! =D Peanut butter and nutella sandwiches are also scrummy!