I guess one person's weird topping is another person's normal. I guess pineapple, anchovy, garlic, etc. can gross some people out. Living in California I kind of marvel that some people think that all the weird combos at California Pizza Kitchen are somehow really "California pizza".
We have a local place (Cheeseboard Pizza in Berkeley) that does a single pizza every day. Some of what they put on can seem strange. I've seen lots of different things, including potatoes, peaches, pine nuts, salsa, lemon zest, broccolini, etc. Some pizzas get arugula sprinkled on top. I got thrown for a loop the time they had tomato sauce. The cheeses can be really exotic too, like bleu, ricotta, or feta.
But one thing [edit] I'll never try is durian pizza. This is a thing in certain parts of Asia like Malaysia.
The broccoli pizza in Inside Out was inspired by Arizmendi Bakery in Emeryville. It's based off of the Cheeseboard model. I heard they didn't have a broccoli pizza before, but did one to commemorate the pizza in the movie.