Well, where exactly did you go and if you liked it. (I 'm from Greece)
I went to Athens, and to see multiple monuments/historical sites and what not. To be honest, I don't recall much besides the bus rides. We went on a cruise to a few islands, which mostly held shops on them. I enjoyed the temple of Poseidon and Mount Parnassus.
I spent a month in Greece when I was in college. It was great! Spent a week on Crete. I was with a class, so during the day we checked out all the Minoan sites, but at night we went out on the town. Spent the next three weeks touring through Athens, Napflio, Olympia, Delphi, etc etc. Had a wonderful time! The place is beautiful! The highlight of the trip was either Napflio or Santorini, both wonderful places.