Stephen Colbert is marking the end of his show with a charitable t-shirt that pokes fun at its cancellation by CBS. As his final episode approaches, Colbert has been reflecting on his time on the show, and other late-night programs are taking note, with one show reportedly going dark on the night of his last episode. Colbert has also announced his involvement in a fundraising effort with DonorsChoose.org and has lined up a new project, writing a Lord of the Rings film.