Conan O'Brien's going out on a high note ... at least with us, because he took time to drop some hilarious material about his final show on TBS and his future endeavors.
The late-night talk show host was leaving Largo late Tuesday night -- he's been recording the final week of "Conan" episodes live at the popular club -- and as he was signing autographs and taking selfies with fans ... he joked about the pressure to live up to the hype ... finally, after 28 years.
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If ya haven't heard, Conan's TBS program's ending Thursday night with Jack Black as his final guest for the hour-long finale ... so we asked if he's got anything special planned with his pal.
In typical Conan fashion, his answer's self-deprecating ... and you gotta hear how he describes his upcoming HBO Max project. The guy's really going all out!!!
Conan also gave his fans a special treat while signing autographs by including a hand-drawn doodle of his likeness ... fully demonstrating why he's been one of the best in the biz for nearly 3 decades.