The Web2NewYork meetups bring back some of the fun (and occassional decadence...) of the Silicon Alley/dotcom heyday, with short presentations (7-8 pm) followed by an informal networking party.
Web2NewYork is for founders of web companies and media/advertising professionals. The meetups reflect New York web business, technology meeting Madison Avenue and Wall Street.
Official Website: http://web2newyork.com