I think "pineapple upside down cake" sounds like an intriguing combination, would totally take a chance on that. I've never been a big "fruity beer" dude (e.g., I despise Blue Moon, and even moreso with an ORANGE SLICE floating in it), however....there's a ton of microbreweries out there taking big chances on (and often succeeding with) the inclusion of subtle fruit, or combination fruit, notes in their beers. Great time to be alive, from a beer point of view.