In large pot of boiling, salted water, cook pasta until just done, about 10 minutes. Drain.
In large bowl, combine tomatoes, olives, feta, capers, parsley, salt, and pepper.
In medium frying pan, heat olive oil over moderately low heat. Add garlic and cook, stirring, for 1 minute. Add cooked pasta and garlic oil to tomato mixture and toss.
Garnish as desired with more parsley or chopped mint.