Here's a pretty good recipe we found a few days ago that's not only delicious but unbelievably easy.
1 large or 2 medium sized mangoes (largely diced)
1 cucumber (diced)
1/2 medium sized onion (you guessed it, diced)
1 tablespoon minced jalapenos (this is for a very mild salsa, add more if you want it spicier)
A few sprigs of cilantro, chopped
Salt and Pepper
Throw them all together in a big bowl and mix together.
And voila! You're gourmet. Eat it with chips or throw it on a tortilla with grilled mahi-mahi and chopped red cabbage and have one of the best fish tacos you've ever had (that you made, anyways).