Rob Reiner visits San Diego Comic-Con to discuss the legacy of This Is Spinal Tap and shares insights on the upcoming sequel, Spinal Tap II: The End Continues, which picks up 40 years after the original. He talks about how the film reflects pop culture and comedy evolution over four decades. Reiner reflects on the impact of the original movie, the challenges of creating a sequel decades later, and hints at how the iconic characters will continue their musical journey.