I'm British, and I'm visiting NYC next month. I've seen videos on YouTube of the spray can art, with space landscapes etc. is that common around the city? If so, where can I find it (I'm staying on Times Square). If it doesn't happen anymore, then is there a shop that sells it?
Here's a link to Jess and Garrett's blog, where they write frequently about street art. I've culled the list for you. If you can't find specific locations, you might contact them through their web site link.
While walking around SoHo my son bought street art from one of the artist selling on the street. Wish I could remember his name. My son knew of him from the interenet. I believe it was on the same street as the Morrison Hotel Gallery. [www.morrisonhotelgallery.com]