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the big bang theory Johnny Galecki Jim Parsons Kaley Cuoco Simon Helberg Kunal Nayyar Melissa Rauch Mayim Bialik ellen degeneres the ellen degeneres show ellentube season 16 season 16 episode 92 hilarious funny interview emotional sad crying cry last season final season through the years big bang theory big bang ellen tickets johnny galecki jim parsons kaley cuoco kunal 2007 look back first impressions