We just won two sponsored tickets from quotidianventures, so this could be considered as "special".
Also we founded CoffeeGrid (http://coffeegrid.org, http://coffeegrid.org/dev/med/) The entrepreneurship and technology community from Medellin/Colombia and our intents going to NYC are to learn and share with the local community. So you are kind of sponsoring the whole Medellin community with this ;)
Recently Quotidian Ventures announced the sponsorship of ten tickets for the startup weekend NYC (http://bit.ly/RyuNSj). And guess what? We both apply and got selected, though we still need some money to make it from Colombia to NYC.
Good luck.