Yes, The Simpsons has been on for 25 years. Feel old yet? You may have forgotten, though, that Conan O'Brien used to be a writer on the show. He helped the cast, writers and guest stars celebrate the show's 25th anniversary yesterday at the live show at the Hollywood Bowl.
O'Brien wore a red suit from his Simpsons episode "Marge vs. the Monorail," which originally aired in 1993. The late Phil Hartmann's character Lyle Lanley wore the red suit in the episode; O'Brien sang "The Monorail Song." Jon Lovitz was also there to pay tribute to Hartmann and sang his Planet of the Apes spoof song. Matt Groenig, Yeardley Smith, Nancy Cartwright, Hank Azaria and Weird Al also made appearances and performances.
The 26th season of The Simpsons premiers September 28 on Fox.
[via YouTube]