CBS just extended David Letterman’s contract through 2010 for hosting duties of The Late Show with David Letterman. “I’m thrilled to be continuing on at CBS,” Letterman said in a statement.  “At my age, you really don’t want to have to learn a new commute.” A great day for Letterman fans, indeed. This will extend his hosting tour beyond competitor Jay Leno, who is planning to leave The Tonight Show in 2009 (passing duties on to Conan O’Brien).

Letterman has been at the hosting job for some time—and will celebrate the 25th anniversary of The Late Show in February. He began his tenure at NBC’s Late Night with David Letterman, leaving NBC in 1993 and making the move to CBS and Late Show. “Thirteen years ago, David Letterman put CBS late night on the map, and in the process, became one of the defining icons of our Network,” said CBS honcho Les Moonves. “His presence on our air is an ongoing source of pride, and the creativity and imagination that the Late Show puts forth every night is an ongoing display of the highest quality entertainment. We are truly honored that one of the most revered and talented entertainers of our time will continue to call CBS ‘home.’”