The stars of the beloved cult classic “This Is Spinal Tap” are reuniting for the sequel “Spinal Tap II: The End Continues.” Cast members Christopher Guest, Michael McKean, Harry Shearer and director Rob Reiner sit down with NBC's Liz Kreutz and open up about their mockumentary style, which Al Roker later adds paved the way for other mockumentaries to be made. 🎬🎸 | Today Show