On Monday the U.S. broadcast television network said Stephen Colbert will debut as the new host of CBS Corp’s “Late Show,” on Sept.ember 8th. Colbert, 50, takes over the late-night TV talk show from David Letterman, who will retire after his final broadcast on May 20. The comedian is best known for playing a satirical conservative personality on Comedy Central’s Emmy-winning faux news show “The Colbert Report,” which finished its nine-year run last month. Colbert has said he will drop the popular character for the “Late Show,” which goes head-to-head against Jimmy Fallon’s “The Tonight Show” on NBC and ABC’s “Jimmy Kimmel Live!”