James Van Praagh and other practitioners of so-called channeling & communicating with deceased people have consistently avoided James Randi's Million Dollar Challenge test to prove their psychic abilities. In this video, Miklos Jako, a knowledgeable layman, tests Van Praagh's ability simply by having a session with him and analyzing what went on.
The results, though not strictly scientific, are pretty conclusive, as well as entertaining.
Miklos Jako is a retired teacher, who has investigated religion and related topics all his life. He is the author of Confronting Believers (Infinity Publishing). He graduated from Phillips Academy, Andover, MA, and Colby College, ME.