If you want to see a show, line up early for CHEAP stand-buy tickets. Most times you can get them.....
9/11 site is hard, especially if you remember what was there. It is now a big ditch that they are building on. But it looks out of place admidst the other buildings.
If you like "interesting" head to the Village and eat there. If the weather is great, people-watch in Washington Square Park....LOL
oh yeah, i grew up there...teehee
Have an awesome time!!!!!!!!!!!!!!!!!!!