A good spicy chili sprinkled with semi sweet chocolate chips. yummmmm 
Teriyaki burgers with sharp cheddar cheese. Most places either don’t put cheese on them, or put white cheese (like Swiss) on it.
I grew up eating a dish that was German-style comfort food. It’s called Himmel und Erte (or something close, meaning Heaven and Earth).
Fry up some chopped bacon and drain most of the fat. Sauté chopped onions in the remaining bacon fat.
Serve the onions and bacon in the middle of a ring of mashed potatoes. Surround the ring of mashed potatoes with a ring of applesauce.
To eat, you slide your fork through the applesauce, into the potatoes, and finally into the onions and bacon.
It’s unbelievably tasty.
Oh, yeah. I’m glad I’m not the only one to partake of that particular combination.
Not exactly unusual, but not something that most people would make:
Ingredients:
1 slice of soft bread (e.g., not rye/sourdough, it has to bend)
2 slices of Jalapeno jack cheese
1 slice of lunchmeat
1 hotdog
Some shredded mozzarella
Bread-Cheese-Meat-Cheese-Hot Dog with slice down the middle-Mozzarella sprinkled in slice. Nuke for ~30 seconds. Sooooo good.
Kit Kat bar on a tuna salad sandwich. The Kit Kat has to be chopped up a bit or else it’s overwhelming. Also good is tuna salad on cinnamon raisin bread.
One o’ these days, maybe when my weight breaks 175 again, I’m making me a donutburger.
Cream cheese and onion on a hamburger…with mustard,
Cream cheese and onion on a hamburger…with mustard.
I hear that’s twice as good!
Chocolate and peanut butter. I found that out by accident.
Peanut butter on York Peppermint Patties.
Potato chips on sloppy Joes.
I got both of these from summer camp, and will still do both as an adult.
For lunch: a big bowl of steamed, white rice with two cans of tuna (in water) mixed in. Then add hot sauce. Yum. 
My dad’s cooking skills were limited to white rice, with a tuna can, ketchup and fried ripe plantains. All mixed up. Oh wait, I thought this was the “Unsurprisingly bad, but unusual food combinations” thread.
My lunch yesterday was a packet of Zataran’s Dirty Rice mixed with a packet of Garlic & Herb tuna. Not quite spicy enough, but still delicious.
I am a fan of dark beer and home made chocolate chip cookies. Guinness especially. Add in a side of extra sharp cheddar cubes and it’s even better.
I’ll second the strawberries and balsamic vinegar as well as the pears and gorgonzola, both amazingly good.
I like to snack on this…
Take a sharp cheddar cheese chunk, dip a little corner of it in some spicy mustard, then dip the mustardy/cheesy goodness into a pile of dried, minced onions.
Very tasty!
I like my tuna with spinach couscous, with melted cheddar on top.
Peanut butter and dill pickle sandwiches
Grilled peanut butter and SPAM sandwiches (introduced by my SIL one very late night)
Peanuts and red hot candies
Peanuts and candy corn
Anybody see a theme here yet?
This only qualifies as a Food Combination if you’re putting it all in a blender and making a sort of Chips-n-Cheez Irish Blizzard™.