‘CONAN’ Writer Brian Stack Leaving TBS for ‘Late Show with Stephen Colbert’ After 18 Years

If you've watched each and every variation of Conan O'Brien over the years, including Late Night with Conan O'Brien, The Tonight Show with Conan O'Brien, and finally, CONAN, then you know exactly who Brian Stack is. If not by name, then undoubtedly by face and talent. The longtime writer has been with the famed comedian for 18 years, starting way back when Late Night was getting off the ground at NBC. And now, it's being reported that Stack is leaving O'Brien and heading back to New York to work on The Late Show with Stephen Colbert.

Stack announced his Team Coco departure earlier today on Twitter, with his TBS co-worker, and fellow CONAN writer, Andrés du Bouchet, confirming later on Twitter that he's heading to The Late Show.

Tonight is my last show with "Conan" after 18 yrs. I'll always be more grateful than I can say to him and all the other great people here.

— Brian Stack (@BrianStack153) April 2, 2015

Stack's list of characters on all three variations of O'Brien's programs have easily been some of the best around. Whether it be The Interrupter, Steve St. Helens, Basic Cable Name That Tune singer Brian LaFontaine (despite him being a horrible person) or WikiBear, the improviser's talents undoubtedly left us wanting more.

Late night legend @BrianStack153 is leaving us for NYC and The Late Show w/ Colbert. We'll miss him! pic.twitter.com/s8sDfZS1y6 — Andrés du Bouchet (@dubouchet) April 1, 2015

While it's sad to see Stack leaving his longtime position with Conan O'Brien, we can't help but be excited for what's ahead at The Late Show.

Both Stack and the new CBS Host started back at Chicago's Second City Improv and have had incredibly flourishing careers ever since. Colbert, of course, went on to be a correspondent on The Daily Show with Jon Stewart, and eventually led The Colbert Report. Stack, aside from working alongside O'Brien for a near 20 years, has been seen on the likes of 30 Rock, Parks and Recreation, New Girl, Baby Mama, Eagleheart, The Office, and more. 

[Image Courtesy of Brian Stack/Twitter]