By Harry Rutter It’s another Hollywood birthday and Grease star John Travolta has turned 70. Known for striking a pose in Saturday Night Fever and the iconic Pulp Fiction, John has been in showbusiness for 30 years. With his birthday celebrations on Sunday, February 18, here The Mirror takes a look back through some of the actor’s awkward moments. From kissing a male co-star to his ever-changing hairstyle, Travolta has certainly had his fair share of strange run-ins over the years. He married the late actress Kelly Preston all the way back in 1991 and had three children, their son Jett passed …