The prolific, enduring career of British pop star Elton John has taken many twist and turns, but he has remained a colorful, flamboyant performer--almost a rock version of Liberace--the whole way through. ONE NIGHT ONLY, filmed at his two sold-out shows in New York's Madison Square Garden in 2000--has John returning to many of his early classics. In addition, he is joined by a diverse array of guest performers, including Mary J. Blige, Bryan Adams, Anastacia, Ronan Keating, and Billy Joel.