Celebrity·Posted on Mar 28, 2017The Cast Of "The Big Bang Theory" Then And NowThis year marks the show's 10th year in production. Time flies!by Whitney JeffersonBuzzFeed StaffLinkFacebookPinterestTwitterMail Jim Parsons in 2007: Jim Parsons in 2017: Kaley Cuoco in 2007: Kaley Cuoco in 2017: Johnny Galecki in 2007: Johnny Galecki in 2017: Kunal Nayyar in 2007: Kunal Nayyar in 2017: Mayim Bialik in 2009: Mayim Bialik in 2017: Simon Helberg in 2007: Simon Helberg in 2017: Melissa Rauch in 2010: Melissa Rauch in 2017: