'Heaven is for Real: A Little Boy's Story of His Trip to Heaven and Back' by Todd Burpo

From the publisher: A young boy emerges from life-saving surgery with remarkable stories of his visit to heaven. "Heaven Is for Real" is the true story of the 4-year-old son of a small town Nebraska pastor who during emergency surgery slips from consciousness and enters heaven.

He survives and begins talking about being able to look down and see the doctor operating and his dad praying in the waiting room. The family didn't know what to believe but soon the evidence was clear.