You've probably seen this movie starring Kevin Spacey (appropriate), Jeff Bridges and Mary McCormack. It was a decent enough movie, a heart-warming tale of what possibly lays the cold unknown darkness of space.
Okay, now go to the store and buy the book. You'll have a much better appreciate of what Brewer was trying to say through his trilogy of books involving K-Pax. (Don't be put off that it's a trilogy; it's only about 630 pages total...and it read quickly.)
Probably the most impressive aspect of this story was how Brewer gave this reader an unreliable character/alien that made me believe. I believed in prot's story. I felt his sadness for not being with his other K-Paxians. I experienced the loneliness and depression and excitement prot felt while living amongst us earthlings. Through Brewer's amazing world-building, I felt like I had seen K-Pax before. Perhaps I had in some daydream...that's the point. K-Pax is relatable. Yes, this review is sappy, a bit sentimental, and to that I add: Who doesn't want to dream of a better world?
VERY HIGHLY RECOMMENDED