I voted for ice cream but I think my favourite is really cookies so long as I just baked them and they're still warm and oozing with melted chocolate chips when you bite into them. But then any cookie, cake, or pastry is ten times better when fresh out of the oven.
Different cultures' idea of desserts are fascinating but I'm too tied to conventional Western sweets. I don't think that rice belongs anywhere near dessert, for example (e.g. sticky rice as served with Thai food.)