by Mychal ThompsonBuzzFeedBuzzFeed Staff I've learned that I live in a bubble of people who are constantly online, consuming everything pop culture, and that's not everybody's reality. I had a rude awakening really hit when a friend thought Martin Short was just the guy from Only Murders in the Building. Hulu/Disney / Courtesy Everett Collection So, as a decades-long Saturday Night Live fan, I want to impart my knowledge of popular celebs and creatives who you probably didn't know started on SNL. 1. Believe it or not, the comedic timing of Iron Man's Robert Downey Jr. goes way back before he was "disguised as a dude" in Tropic Thunder. Before becoming one of the highest-grossing actors of all time, he had a stint on Saturday Night Live. VALERIE MACON / AFP via Getty Images Robert was part of the new cast of Saturday Night Live from 1985 to 1986 alongside Weird Science costar Anthony Michael Hall. Unfortunately, his season received poor ratings, and it wasn't in the cards for Robert to just crack jokes live on the small screen. NBC / NBCU Photo Bank/NBCUniversal via Getty Images 2. Bob Odenkirk is a two-time Emmy Award-winning actor, comedian, writer, and producer known for his roles as Saul Goodman/Jimmy McGill on Breaking Bad and its spin-off, Better Call Saul, but his career began with Saturday Night Live a couple of decades earlier. NBC / Theo Wargo/NBC via Getty Images Bob got his start as a writer for Saturday Night Live from 1987 to 1991, during the era that included Adam Sandler, Chris Farley, David Spade, and Chris Rock. He won an Emmy for Season 14 and went on to write for shows like Late Night with Conan O'Brien and The Ben Stiller Show. NBC / NBCU Photo Bank/NBCUniversal via Getty Images 3. Anthony Michael Hall was a breakout '80s star, appearing in hits like Sixteen Candles, The Breakfast Club, and Weird Science with a young Robert Downey Jr. But, did you know he joined the cast of the popular late-night sketch show for a hot minute? NBC / Noam Galai/NBC via Getty Images Anthony was part of Saturday Night Live from 1985 to 1986. At 17, he remains one of the youngest cast members ever to join the show. He was on SNL at the same time as other actors, Joan Cusack, Randy Quaid, and Iron Man actor Robert Downey Jr. NBC / NBCUniversal via Getty Images 4. Everybody knows Conan O'Brien as the former host of Late Night with Conan O'Brien from 1993 to 2009, then The Tonight Show with Conan O'Brien, and eventually Conan from 2010 to 2021. But he actually got his start writing alongside Bob Odenkirk for SNL. Arturo Holmes / Getty Images Conan was a writer for Saturday Night Live from 1988 to 1991, before becoming a writer and producer on The Simpsons for a few years. Eventually, Conan became the host of Late Night, replacing David Letterman, and the rest is history. NBC / NBCUniversal via Getty Images 5. Comedian Hannibal Buress will always be synonymous with the hilarious pediatric dentist, Lincoln Rice, from Broad City, and Eric Andre's wisecracking sidekick on the Eric Andre Show. But, before all that, he was a writer on the late-night sketch comedy show. (C)Comedy Central/Courtesy Everett Collection Hannibal was a writer on Saturday Night Live from 2009 to 2010, before becoming a writer for the popular NBC show 30 Rock, which featured many SNL alums. His career as a stand-up comedian would take off, most notably after his infamous 2014 stand-up set calling out allegations against Bill Cosby. (C)Cartoon Network/Courtesy Everett Collection 6. Stand-up comedian and actor John Mulaney is everywhere now with his Emmy Award-winning stand-up specials The Comeback Kid and Kid Gorgeous, and his work with frequent collaborator Nick Kroll. Yet, it was writing for Saturday Night Live where John first shone as a writer and comedian. Presley Ann / Getty Images for Netflix John wrote for Saturday Night Live from 2008 to 2013, during the late 2000s era that included popular SNL cast members like Bill Hader, Fred Armisen, Kristen Wiig, Amy Poehler, and Seth Meyers. While he was never a cast member, he hosted the show six times. NBC / NBCU Photo Bank/NBCUniversal via Getty Images 7. Writer and filmmaker Adam McKay's movies have become comedy gold with classics like Anchorman: The Legend of Ron Burgundy, Step Brothers, and Talladega Nights: The Ballad of Ricky Bobby. And there's a reason why he frequently collaborated with Saturday Night Live alum Will Ferrell. (C)Columbia Pictures/Courtesy Everett Collection Before cranking out a slew of hilarious movies with Will, Adam was the head writer of Saturday Night Live from 1995 to 2001, one of the most popular eras of the sketch comedy show. After his tenure, he went on to write and produce numerous films, including the award-winning satirical drama The Big Short. Kevin Mazur / WireImage 8. Julia Louis-Dreyfus is currently one of the most Emmy-awarded actors in history for her roles on Seinfeld, The New Adventures of Old Christine, and Veep. But, years before she became a TV powerho