I make a nice panini-style sandwich using a George Foreman grill. Here's recipe for one serving.
2 slices of Italian bread
1-2 tsp of mayonnaise
a little bit of horseradish, to taste
2-4 slices of sliced ham or turkey, depending on size
2-4 slices of hard salami, depending on size
2 slices of Munster, Monterrey Jack with jalapeños, or Mozzarella cheese,
4 small pickle slices or 1 large pickle slice
Take 2 slices of bread. Mix the mayonnaise with horseradish, and spread the mayonnaise on the bread to cover evenly. (You can mix directly on the bread.) Put the lunch meats on one piece of bread. Put the cheese on the other piece. Add the pickle slices on top of the cheese. Put the bread together. Toast the sandwich in a George Foreman grill for 2 to 5 minutes, or until the cheese is melted and there are grill marks on the bread.
You can experiment with different types of meats, cheeses, and any ingredients you wish to add. Just make sure you use Italian or other European-style bread. Wonder Bread or any similar kind won't work; it'll be squeezed flat in the grilling process. For health reasons, you can replace the mayonnaise and horseradish with Dijon mustard. While you're at it, use whole wheat.