The Old Foodie has a great bit about tomatoes and the law that’s a good read.  I’ve often pondered the distinctions between fruit and vegetable and how we mangle them.  Also how the difference and distinction are culturally based.  We tend to use rhubarb (for example) mostly in sweet dished with fruit, but in Persian cooking it’s used in stews (khoresh) with beef or lamb.  Which is fabulous, BTW.  It’s also interesting the think that tomatoes have legal status.  I wonder if that’s still true…