We actually went on the tour on our last day in New York, starting near the Empire state building, heading Downtown. Although we had seen the majority of the sights already, it didn't matter as Dwayne filled is in on not just the obvious information about the area's and buildings, but lots of things we didn't get to experience as we were tourists, not a local!
Dwayne was helpful, funny and entertaining...definitely made the bus tour very enjoyable!