I graduated with a degree in CS from Columbia in 2007, at the peak of the finance boom. Most of my classmates at least considered a job at an i-bank; a lot of us had internships. I had a sweet job offer from Morgan Stanley waiting for me that I turned down to leave NYC for good (good riddance!). It was such a crazy time then, but it was all we knew. There was a constant stream of crazy, lavish recruiting events on campus from all the banks; it seemed like everyone was going to go work for them and that was normal.
Three years later, and the only people in my cohort who still work at the banks are those who seemed to be in the lower tier of students. Everyone else had either moved to GOOG, a start up, or San Francisco. I'd love to see what the on-campus culture is now.