Pretentious wine drinkers who go to great lengths to pronounce 'cabernet sauvignon' with authenticity, but then say 'carver' for 'cava'. An old chestnut I have no doubt mentioned before, but it still grates.
And, as a former Silhillian, I say 'so-lee-'hull', with stress on the final syllable, seeing as it is the hill that is soily.