I'm going to baking me some fine mac and cheese today, and I need ideas. Do you guys put anything special in your cheese+carb foods?

I usually throw velveeta and muenster in with my macaroni, let it melt, then cover it with cheddar and colby jack before throwing it in the oven. The second time around I added bacon, and that was amazing. This time around I'm considering making it spicier with pepper jack and maybe a bit of Tabasco... but I'm not sure. I also considered ditching muenster for something else, like more cheddar (because more cheddar is always better), and adding sour cream to help with the taste? Possibly a tomato-base pasta sauce... or sliced tomatoes. I'm trying to make it less bland.

Also I hear that in some parts of the world they use cucumbers instead of tomatoes in their grilled cheese. CRAZY.