That is the name of a movie I just saw. It purports to be a rendition of the after life experience. No tunnels or anything like that. The basic theory is that your immediate afterlife is a lucid dream. That goes on for 1 1/2 hours of movie time- at the end of which the lead flies off, presumably to heaven.

The movie is steeped with physics and philosophy, some of which is used to justify the lucid dream hypothesis. I've had one lucid dream in my life, and the movie did not capture my experience. It actually comes closer to my ordinary dreams.

If you enjoyed beautiful mind, you would probably enjoy Waking Life as well.