At his sentencing hearing on Monday morning June 29, 2009, he was given a 150 year sentence.
Madoff pulled off what is probably the greatest Ponzi scheme fraud in history and has been the subject of tons of press that you can read at your leisure elsewhere on the internet.
The scale of his fraud and deceit certainly seems to easily justify the harshest of sentences. Still, one has to wonder where all the money went and why others didn't get arrested too. It seems very hard to believe that no one knew what he was up to in his entire operation --- not even his relatives who worked for him. Perhaps that's another day's justice.