Andy Richter, the long-running late-night sidekick on Conan O’Brien’s series of talk shows, was an early adopter of Twitter, becoming one of the platforms most vocal and politically active celebrities. He’s also been in the industry for over two decades, making guest appearances in shows like Arrested Development, Happy Endings, American Dad!, and 30 Rock. In the video above, Richter tells us how Hollywood has changed over the past 25 years.