I've got family at University Plaza on the edge of the Village... I used to go up every summer but lately it's been more sporadic.
I love it there... I was there two months ago and before that I went up in February of last year to see the Gates in Central Park.... for me I usually just go to the museums when I'm looking for something to do in the city. The Met, Natural History, Moma, Whitney, Guggenheim, Jewish, Intrepid are among the best there if you're looking for that sort of thing.