He'd already co-founded the Lookingglass Theatre Company in Chicago in 1988 when Friends cast him as Ross Geller in 1994. Ross wasn't the most glamorous role in the ensemble, but Schwimmer made the character the most meme-worthy: a paleontologist whose overenunciated 'WE WERE ON A BREAK' became comedy shorthand that outlasted the show by two decades. He earned a SAG Award and an Emmy nomination, and stayed with the series all ten seasons until 2004. The character followed him everywhere. He's said it messed with his head.
Post-Friends, Schwimmer mostly retreated. He voiced Melman in the Madagascar franchise, directed Run Fatboy Run in 2007, and kept his profile deliberately low. He's spoken openly about how the show's fame 'messed with my relationship to other people.' He made news defending Friends against diversity criticism, and later when he suggested the MeToo movement involved 'a lot of overreacting,' given his Rape Foundation board membership, the optics were rough. His lead role in Goosebumps: The Vanishing in 2025 earned him a Children's Emmy nomination. Progress.
The Lookingglass Theatre Company started with Schwimmer recruiting seven Northwestern classmates, raising $10,000 to take a show to the Edinburgh Festival Fringe in 1988, which is where they decided to start the company for real. Before Friends made him famous, he paid rent as a roller-skating waiter at the retro diner Ed Debevic's. He's been on the board of the Rape Foundation in Santa Monica for years, and in 2018 produced That's Harassment, a series of short films recreating real workplace abuse scenarios. The activism predates the celebrity.