Chop up a cucumber, sweet peppers of your choice, tomatoes, and red onion. Adjust the quantities to your tastes and servings. I toss it with a few tablespoons of really good balsamic vinegar and some basil although oregano is the original herb used. Once you mix this around you can add the olive oil. Use about 1/4 cup of the nice green extra virgin stuff. If you add it first the vinegar can't grab onto the salad and will just sit on the bottom. Sprinkle in as much Feta cheese as you like and top with Kalamata olives. I am the only olive eater in my house so I just leave them out.
TIP: first slice the tomato in half and gently squeeze out most of the seeds so you don't have a watered down salad.
I served this with some of the OMG meatballs from this site. I just simmered them in some mushroom soup and onion soup mixed. Fancy pants here.