Stephen Colbert has announced that CBS is cancelling The Late Show after a 33-year run next May. Colbert shared the news with his audience Thursday at New York's Ed Sullivan Theater, saying he learned Wednesday night that after a decade on air, "next year will be our last season.""The network will be ending The Late Show in May," Colbert said as the crowd erupted in boos. "Yeah, I share your feelings. It's not just the end of our show but it's the end of The Late Show on CBS."The 61-year-old comic said he is not being replaced as host and said the entire show "is just going away.