Salt with watermelon sounds quite unusual to me, and this is coming from someone who likes having salt with all sorts of fruits:
Lemon, Raspberries, Grapefruit, Blackberries, Blueberries, Lime.
Maybe I'll try watermelon with salt sometime
And whats the deal with the white cheese thing? :S Sounds like a very odd mixture. Although that said I have had cottage cheese with raspberries (only so the raspberries would drown out the horrible flavour of the cottage cheese, but it is an accepted combination!) and you can make queso blanco from cottage cheese so I guess white cheese with fruit isn't completely insane.