Watermelon and Feta?

I bought a quarter of a watermelon the other day, and have thoroughly enjoyed having it all to myself because Todd does not like watermelon (which is so improbable to me that I actually bothered to ask him why - futile). It reminded me, though, of a salad someone made for supper club. I remember being quite skeptical as she started pulling together the two main ingredients: watermelon and feta. But it was really wonderful, the salty feta contrasting beautifully with the sweet, wet watermelon. I have a theory that in one bite it creates and quenches a thirst in you. Nigella Lawson has a recipe in Forever Summer that has a bunch of other stuff: olives, parsley, red onion, lime, mint, pepper. I can't remember what Sam's had, but I do think tossing together a little lime juice, some cubed or crumbled feta and some chunks of watermelon would be yummy. Maybe I'd add a little ground cayenne or chipotle for heat, although that may be going too far.