The man who died in 90 minutes in heaven is Don Piper.
Don Piper was a pastor who was involved in a fatal car accident in 1989. He was declared dead at the scene but miraculously revived after 90 minutes. During this time, he claims to have experienced a near-death experience where he visited heaven.
Don Piper's story was documented in his book, "90 Minutes in Heaven," which became a bestseller. The book and subsequent film adaptation share his account of his time in heaven and the impact it had on his life.