Watch Ray Harryhausen: Working with Dinosaurs for Free: How to Stream the Movie Online at 123Movies. . A tribute to stopmotion supremo and special effects genius extraordinaire Ray Harryhausen, the man behind some of cinema's greatest fantasy films - The Beast From 20,000 Fathoms, The Seventh Voyage of Sinbad, Jason & The Argonauts and One Million Years BC. Featuring exclusive footage of Harryhausen at work on his first stopmotion for over 20 years, and contributions from many of Hollywood's top special effects directors and creators.