The veteran comedian, 78, shared a video montage of him roasting the TV network during his decades-long career of hosting “The Late Show” from 1993 to 2015.

David Letterman is throwing some subtle shade at his former network in the wake of its decision to cancel 'The Late Show With Stephen Colbert.'

David Letterman is subtly showing support for his successor Stephen Colbert after CBS' shock cancellation of "The Late Show."