First stop? Japan with the "Sesame Pork Chop Burger." It looks to be a breaded and deep fried pork cutlet ("tonkatsu") topped with shredded cabbage and what I think is Japanese mayo. The bun is dotted with the occasional black sesame seed along with the typical white ones.
It sells for $99 NT (~$3.38 U.S.).
They've something similar in Japan before (filled with cheese no less), but this is the first time I've heard of it outside of Japan (at Mcdonald's I mean, because tonkatsu is pretty common at a lot of Japanese restaurants). No, wait... I looked it up. Apparently, they served a similar sandwich back in 2007 according to this blog. Still, when do we get a world tour menu here in the U.S.?!