New York Design Week -- May 19th - 22nd
Various places.
http://www.core77.com/calendar/ny_designweek_2007.asp

Bill Viola -- Works from The Tristan Project
until May 15th, 26th st & 10th Av
http://www.jamescohan.com/exhibitions/2007_4_bill-viola/

New York Electronic Art Festival
May 12 - June 10
-- Special Saturday Presentation: May 19, Hisao Ihara / Karina Aguilera Skvirsky
-- 4 - 6 pm at 38 Park Row @ City Hall, free
http://nyeaf.org/