Antonio's in Brookline has a kind of typical Pittsburgh-type pizza but the difference is they run some wild specials. They had a Thanksgiving one that was like the pizza equivalent of the Gobblerito. I saw they posted a crab Rangoon pizza a bit ago. Oh and there was one with bratwurst, mustard, and sauerkraut for Oktoberfest. I remember Unique Pizza and I feel like Antonio's kind of carries the mantle now for unusual pizza topping combinations.

They also have lots of vegan options.