David Letterman Honors Regis Philbin in Moving Tribute

David Letterman is paying tribute to the late, great Regis Philbin.

Letterman, 73, shared a heartfelt statement on Twitter on Saturday in tribute to Philbin, whodied Fridayof natural causes.

"Regis is in the same category as [Johnny] Carson," Letterman wrote. "Superlative. He was on our show a million times, always the best guest we ever had, charming, lovable and could take a punch. When he retired I lost interest in television. I love him."

As two of television's most popular and successful talk show hosts, Letterman and Philbin were close colleagues over the years and appeared on each other's shows many times.

Philbin racked up a total of 150 appearances onLate NightandLate Show with David Letterman —more than any other guest in Letterman’s talk show historyand made his last appearance in 2015, for Letterman'spenultimate episodeas host of the NBC talk show.

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