Burgers and pizza (and omelettes) are the perfect "blank canvas" foods. You can be boring with few/no toppings, you can be traditional with the expected combinations, or you can flex your creativity with whatever else your heart comes up with.

Either way, it's an ingredient with plenty of potential, but it needs to be countered somehow. Canadian bacon doesn't do it for me, in pizza but pepperoni and jalapeno does! For burgers... I like the comment mentioning soy sauce, but if I had to think of something on my own... Hmmm, maybe grilled with grilled jalapeno, crispy onion, and some cream cheese? Basically a jalapeno popper burger with the pineapple shaking things up and the crispy onion adds some crunch?

Damn, now I'm hungry