Difficult, as there are so many: but to narrow it down (a bit) - Cheddar on freshly-baked bread with butter and homemade chutney, takes some beating. Stilton, and any variant of that blue veiny cheese. A mature, runny and pungent Camembert on a baguette with appropriate (amounts of) red wine. A Norwegian caramelly 'goat cheese' with (sorry, but when in Rome . . . !) raspberry jam, or even better, treacle. Delicious. And probably all the others!