Hollywood actor Harrison Ford insists starring in an advert for snowboard wax was a major highlight in his career - because it allowed him to work with his son MALCOLM. The INDIANA JONES star thrilled his son by lending his acting talents to the promotional short and insists playing bus driver JETHRO was one of the most fun onset experiences he has ever had. He tells UK magazine Hotdog, "My son has some friends that have a snowboard wax company and they made a little video to promote their snowboard wax. "I spent a day goofing around with them."