«The Big Bang Theory» – Season 9 Episode 17 watch online
Episode Title: «The Celebration Experimentation»
Episode Released: 02.25.2016
Season number: 9
Episode number: 17
Episode Description: Beware, spoilers! To read - hover over the text.
Sheldon's birthday, the boys thought long and hard what to give a friend, they even got permission from Dr. Cooper to the party, which he gave reluctantly. The surprise will be a guest who is for the birthday boy very desirable.