Where can we watch the votes come in?
Good question. In most States, the Secretary of State website displays real-time results, but I can find it on the NY site.
But I did find this:
http://politisite.com/2011/09/13/new-york-district-9-special-election-results-turner-r-vs-weprin-d/
Polls close at 9PM EST, in about 5 minutes, and this site promises updates every 15 minutes, starting at 9:15.