With a total of 10 seasons to its name, ‘Friends’ starred a number of other well-known celebrities you may not have recognized. In honor of the show’s 25th anniversary, here are 10 celebrities that made guest appearances on ‘Friends.’ 1. George Clooney 2. Jennifer Coolidge 3. Dakota Fanning 4. Danny DeVito 5. Jane Lynch 6. John Stamos 7. Winona Ryder 8. Ben Stiller 9. Julia Roberts 10. Brad Pitt
