After David Letterman announced Thursday that he would be retiring after more than three decades in late-night television, the news, though not exactly unexpected, sparked an immediate response on Twitter.
With the genre's elder statesman planning to sign off in 2015, celebrities of all stripes weighed in on the latest upheaval in late night.
Here are a few of the most notable reactions:
Fellow gabber Andy Cohen: "Letterman broke the mold for not just Late Night, but TV itself. He's a vanguard- his influence is seen all over the dial today. What a run!"
Reality star Donald Trump: "I can't believe David Letterman has announced his retirement--he is a great guy!"
Late-night rival Arsenio Hall: There's a tear under the CBS eye! David Letterman - Simply The Best!!!