"90210" is a popular American television series that originally aired from 1990 to 2000. It follows a group of teenagers living in the upscale, star-studded community of Beverly Hills, California. The show explores their friendships, relationships, and the challenges they face, including issues like love, family dynamics, and social pressures. The series is a spin-off of the earlier show Beverly Hills, 90210 and features a new generation of characters. It was well-received for its engaging storylines and character development, making it a significant part of teen drama television during its run.