David Letterman

David Letterman

David Letterman finished his 33-year career in late-night television Wednesday with a star-studded farewell show that included four presidents and a Top Ten with one-liners from Steve Martin, Tina Fey and others:

His finale, the last of 6,028 broadcasts on CBS and NBC, drew the show's highest ratings in 10 years, and it also touched off an outpouring of thank-yous and other reaction on Twitter. Here is a sampling:

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