John Travolta made sure that his little boy Benjamin had an extra fun weekend with all the treats this Halloween.MORE: John Travolta's video of son divides fansThe Grease star took his ten-year-old son on a trip to the beach, and shared a lovely selfie of the pair of them smiling on the sand, with the clear blue ocean in the background.Alongside the picture, the Hollywood star wrote: "Happy Halloween everybody! What was your favorite candy bar growing up at Halloween?"VIDEO: John Travolta's