David Letterman retirement: Obama, Ellen, Kimmel react on Twitter

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:

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President Obama: “There are more than 10 reasons #DavidLetterman will be missed.”

Letterman superfan Jimmy Kimmel: “David @Letterman is the best there is and ever was.”

“Girls” creator Lena Dunham: “I love Letterman but I am really excited about what this could mean for the diversification of late night. Trying not to be a pessimist...”

Daytime talk-show host Ellen DeGeneres: “David @Letterman announced he’s retiring in 2015. It’s been 31 incredible years. Television won’t be the same without you, Dave.”

“Today” weatherman Al Roker: “There has always been a direct line between Johnny Carson and David Letterman. Two of the best broadcasters ever.”

Comedian Ricky Gervais: “Cheers to @Letterman. A king, a king-maker, and probably the man most to blame for inflicting me on America. See you soon.”

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!!!

Funny man Steve Martin: “Wow, @Letterman retiring. He’s been a significant force in my ‘later’ career. Thanks, Dave!”

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