Starfruit! I vaguely recall eating pieces of this in fruit salads as a kid, but I had never eaten one by itself until yesterday. Since peaches are out of season now, I've been looking for alternatives and picked one of these lovely little things up while I was grocery shopping.
WOW. I mean, wow. In addition to being pretty and unusual-looking, two things that will generally sell me on a food even before tasting it, starfruit is quite the treat. It's light, which is nice after a heavy meal when you're wanting for some raw food without filling up too much more, and it has a sort of citrus feel without acidic undertones. Given what they cost at my local grocery, it's going to have to be a treat, but I'm glad I bought one!
Question for the comments: What's your favorite "unusual" or "exotic" fruit?