Jim Carrey joking around with director Steve Oedekerk on the set of Ace Ventura: When Nature Calls.
Kenny Baker falling over while testing an early version of the R2-D2 costume.
A 16 year old Keanu Reeves getting attacked at a teddy bear convention.
William Shatner hiding behind a bush on the set of Star Trek.
John Lennon making silly faces.
William Shatner, DeForest Kelley and Nichelle Nichols goofing around on the set of Star Trek: The Original Series.
Filmed by Billy Blackburn
A young Prince Harry sticking his tongue out to the paparazzi as he arrives for a school nativity play with his mother Princess Diana.
Michael Jackson joking with director John Landis on the set of the music video for Black and White.
Harrison Ford and Steven Spielberg having a little dance on the set of Indiana Jones and the Last Crusade.