<Tr> <Td_colspan="8"> <P> When Amy plans a birthday party for Sheldon because he made her birthday so special, he is reluctant on account of a traumatic childhood experience in which his sister's friends lied to him that Batman was coming to his sixth birthday, thereby ruining all his birthdays thereafter . Nonetheless, he relents, and the friends hire TV's Batman, Adam West, to attend as their present . When Sheldon arrives, he is initially happy, but quickly panics and runs into the bathroom . Penny tries to talk to him and they open up to one another . He emerges to apologize to everyone, after which Amy and all assembled share a toast in Sheldon's honor . Sheldon is delighted to hear all the nice things said about him . They then receive a video call from Professor Stephen Hawking, who joins them in singing "Happy Birthday to You". </P> Title reference: Sheldon allows the group to experiment by giving him a birthday party . </Td> </Tr> <P> When Amy plans a birthday party for Sheldon because he made her birthday so special, he is reluctant on account of a traumatic childhood experience in which his sister's friends lied to him that Batman was coming to his sixth birthday, thereby ruining all his birthdays thereafter . Nonetheless, he relents, and the friends hire TV's Batman, Adam West, to attend as their present . When Sheldon arrives, he is initially happy, but quickly panics and runs into the bathroom . Penny tries to talk to him and they open up to one another . He emerges to apologize to everyone, after which Amy and all assembled share a toast in Sheldon's honor . Sheldon is delighted to hear all the nice things said about him . They then receive a video call from Professor Stephen Hawking, who joins them in singing "Happy Birthday to You". </P> <Tr> <Th> 201 </Th> <Td> 18 </Td> <Td> "The Application Deterioration" </Td> <Td> Mark Cendrowski </Td> <Td> Story by: Steven Molaro & Eric Kaplan & Adam Faberman Teleplay by: Steve Holland & Jim Reynolds & Maria Ferrari </Td> <Td> March 10, 2016 (2016 - 03 - 10) </Td> <Td> 4X7218 </Td> <Td> 18.68 </Td> </Tr> <Tr> <Td_colspan="8"> <P> Sheldon, Leonard, and Howard move forward with patenting their gyroscope idea, but are shocked to learn that, as Caltech employees, they are only entitled to 25% of any profits, and that Howard, as a NASA employee, is not legally entitled to any profits . They reluctantly agree to sign, allowing Sheldon to write their own contract to share the money from the remaining 25% with Howard . Bernadette is against this, as Sheldon belittles Howard every time they try to work together . When confronted about this, Sheldon agrees to make it part of the contract that he be respectful of Howard for the purposes of the patent . Sheldon also shows his generosity by stipulating that 1 / 4 of his profits will go to a scholarship fund for the Wolowitzs' baby . Meanwhile, Emily sends Raj a belated Valentine's gift and wants to see him again . Raj turns to the women for advice, but decides to go through with seeing her after they say he shouldn't . On his way there, Claire calls him to say she is now single and he should see her instead, since Emily is just manipulating him . Raj drives back and forth while talking to both women, unsure of whom he should see, before choosing Emily and ultimately sleeping with her . </P> Title reference: The men being shocked that, to apply for a patent, they must give up most of their profits . </Td> </Tr>

The big bang theory season 9 episode 18