I am NOT a fan of offal, but many are and there seems to be a recent uptick of things being prepared snout/beak-to-tail. Recently I went to a yakitori joint and had some pretty tasty things, but on the whole, it's just not for me.

(Do we include foie gras in this?)

The few things I've enjoyed:
FOIE GRAS (since, technically, it's an internal organ I suppose).
Chicken heart - Aforementioned yakitori place not only served us chicken hearts, but separated the atria and ventricles out onto separate skewers... and they were damn tasty!
Liverwurst, especially Braunschweige - don't ask, I just like it.

Other than that, everything else just tastes gamey to me. I can't handle the liver and onions, and chicken gizzards and livers are just... no thank you!

Maybe if I pour Sriracha on everything...