There is a particular series of Hancock's that i really like, and some of them were at Sheffer (and the rest can be seen on Hancock's website). I like it so much that i bought 'all the buildings in new york' for my gentleman friend.
The other project that Hancock has at the moment is the ambitious aim to draw all the building in new york, and you can see his progress on his blog. Here is a little taster (click it to make it bigger - it's worth it):
[Pardon my off-theme blogging!]