One thing about Burger King that is great is that they serve "Veggie Burgers" that are actually quite tasty. They sometimes have you pull over in order for them to actually cook said burger but in the end it's worth it. Their whopper jr's are good and their fries aren't too shabby either. I feel they excel in burgers. Their chicken tenders/nuggets and sandwiches could be better but are edible to satisfy a hunger.
I was once given free cinnamon rolls (or something like it) because I was in a drive-thru for longer than expected. That was a pleasant surprise!