There is alot of talk out there about books such as 90 Minutes in Heaven and Heaven is For Real and 23 Minutes in Hell.
Randy Alcorn thinks through this issus (these issues?) here.
A particularly helpful quote:
"Acts 17:11 tells us that the Bereans searched the Scriptures daily "to see if what Paul said was true." Now, if ever in human history you were going to assume that another person's words were true, not finding it necessary to double-check against the Scriptures, surely it would be with the Apostle Paul. Yet the Bereans were commended for carefully scrutinizing Paul's words in light of Scripture. If Paul's words needed to fall under the judgment of God's Word, obviously mine do, and Don Piper’s do, and Todd and Colton Burpo’s do.
"I do believe that something is seriously wrong if people take more time to contemplate and discuss Colton Burpo’s account of petting Jesus' rainbow-colored horse, or of Jesus wearing a crown with a pink diamond, than they do studying what the Bible actually says about Heaven. The back cover of the book says 'Heaven Is for Real will forever change the way you think of eternity.' I would say, 'Seek to let the Bible alone change the way you think of eternity.'"