New York, October 20 – We love Mischa Barton. Our L.A. team said goodnight to The OC star in West Hollywood on Tuesday and our New Yorkers said “Hey” on Wednesday at the Supper Club in the Big Apple. Barton joined Bill Gates in introducing the “Paparazzi” watch, a joint venture between Microsoft and Swatch. The watch has wireless capabilities, so you can check your wrist for news, weather, sports, and stock quotes. Swatch is offering a chance to join Barton on the set of The OC, train with Olympic champ Carl Lewis or tour the Consumer Electronics show with Bill Gates. So what was Rescue Me star Denis Leary doing there? Swatch CEO Nicolas Hayek presented the comedian with a $25,000 check for his firefighters’ fund charity.