This one absolutely ROCKS, I take it everywhere, have passed the recipe out at least 5 times by request. It's also great if you have a vegetarian living with you...make one batch of this and it's lunch for a week. My mom commented that it's just like one of the salads sold at Whole Foods, only this doesn't cost $8/lb.
I use Roma tomatoes rather than cherry tomatoes because they maintain their shape a bit better...and a word on couscous...make sure you check the outside of the box about how much one box makes. If you use Far East brand, you have to use 2 boxes instead of one.
Two chopped red bell peppers seem to go over better than mixed ones. I also put in a larger container of feta.
If your grocery store doesn't have greek salad dressing in a bottle, mix together 1/3c each of olive oil and balsamic vinegar and that works, too.
When not making this for a party, I serve this as the side dish sometimes with "Cousin Cosmo's Greek Chicken," also on this site. We call it Greek Night, and my 3 kids LOVE Greek Night!