The Big Bang Theory 10x15 Promo/Preview "The Locomotion Reverberation" The Big Bang Theory Season 10 Episode 15 Promo The Big Bang Theory 10x15 Promo "The Locomotion Reverberation" (HD) The Big Bang Theory 10. sezon 15. bölüm fragmanı » Starring: Jim Parsons, Johnny Galecki, Kaley Cuoco, Simon Helberg