Stephen Colbert took a multitude of scathing digs at his own network in one of his last episodes of ‘The Late Show’ -- even enlisting the help of talk show legend and founder of the program, David Letterman, to get revenge on CBS for cancelling the show of 33 years. From destroying company-owned property, to openly mocking CBS brass and on-air talent, here are all the biggest parting shots from Thursday night’s blistering episode.