David Letterman

To mark the anniversary of the comedian's final 'Late Show' episode, we've rounded up 18 of his most memorable late-night moments.

David Letterman says goodbye after 33 years on late night TV.

Last week it was Joan Rivers who walked out on a CNN interview, so when Joan appeared on The Late Show with David Letterman, Dave returned the favor.

Shreveport-Bossier folks were tuned in to "The Late Show with David Letterman" last night thanks to a well-known local musician made an appearance on the show. Brady Blade, Jr., owner of Shreveport's Blade Studios, played drums during a performance by John Doe of L.A. punk band X.

Well, that was fast! Just one week after David Letterman dropped the 'Late Show' bombshell that he would retire in 2015, his replacement has officially been announced. Following early and decisive rumors, Stephen Colbert will officially leave behind Comedy Central's 'Colbert Report' to ascend the late-night throne as the new host of CBS' 'The Late Show.' You're welcome, nation!

During a taping of tonight's 'Late Show', host David Letterman announced to a shocked studio audience that he would be retiring in 2015 after his latest contract ends.

The late-night landscape will look drastically different by this time next year, now that Jimmy Fallon will take over for Jay Leno as host of 'The Tonight Show' in early 2014, but some things will at least stay the same. Extending his own 2014 contract, David Letterman has re-signed to stick with CBS' 'Late Show with David Letterman' through at least 2015.

It has to be one heck of a sight to see, being able to be an audience member and watch David Letterman interview Conan O’Brien. They’re easily both kings of late night talk shows and have been adored by the masses for years. Now they’re meeting up once more, making plenty of late night talk show fans very happy.

CBS’s late night schedule is set for the next couple years. On Monday the network announced that ‘The Late Show’ host David Letterman and ‘The Late, Late Show’ headman Craig Ferguson have both had their contracts renewed through 2014. When he completes his new contract, Letterman will have been a late night talk show host for 32 years, which would break the record previously held by former ‘Tonigh