Last night was the social event of the year for the finance community: It was the annual gala of the Robin Hood Foundation, the poverty-battling non-profit backed by banking heavyweights. The usual suspects from the worlds of hedge funds and private equity were in attendance, as were a smattering of celebs too classy for the Sex and the City premiere, including Jay-Z, Conan O'Brien, Russell Simmons, Tom Brokaw, David Byrne, and Cindy Sherman. Performances by Shakira, Sheryl Crow, and John Legend had noted hoofers like Henry Kravis, Steve Cohen, and Art Samberg tapping their feet underneath their tables.