David Letterman to Pass Torch to Stephen Colbert Next Year. Here's His Top 10 Best Moments on the Late Show [Video]

After being on air for 6,028 episodes of Late Night and Late Show, David Letterman will host his last on May 20, 2015. The iconic talk show host will pass on the torch to Stephen Colbert, who will take over the show next year.

Letterman announced his retirement to a shocked Ed Sullivan Theatre studio audience back in April. He had not told anyone of his plans to make the announcement and it was greeted with stunned silence. Stephen Colbert, famous for his Colbert Report, was officially named as Letterman's successor a week later.