The Separation Agitation: Devoted new father and mother Howard and Bernadette find it upsetting to leave baby Halley at the nursery when Bernadette's maternity leave ends. (S10 Ep21/24) [AD,S]
The Birthday Synchronicity: Bernadette goes into labour, but have Raj, Stuart and father-to-be Howard rushed the expectant mother to the hospital too early? (S10 Ep11/24) [AD,S]
The Convergence Convergence: Conflict arises when Leonard's newly divorced mother and father are in town at the same time as Sheldon's devoutly religious mum. (S9 Ep24/24) [AD,S]
The Positive Negative Reaction: When Bernadette makes the big announcement that Howard is to become a father, he worries that he needs to start earning more money. (S9 Ep16/24) [AD,S]
The Spock Resonance: Howard and Bernadette fall out over her plans to renovate his childhood home, so Bernadette recruits her father for some advice. (S9 Ep7/24) [AD,S]
The Bachelor Party Corrosion: The girls force Penny to break the news to her family that she has eloped with Leonard, so she calls her father to let him know. (S9 Ep3/24) [AD,S]
The Closet Reconfiguration: When Howard and Bernadette get Sheldon to organise their untidy closet, Sheldon finds an unopened letter from Howard's long-absent father. (S6 Ep19/24) [AD,S]
The Boyfriend Complexity: A stack of fatherhood-themed episodes featuring the gang and their dads for Father's Day. Leonard takes advantage of a discovery as Penny's dad visits. (S4 Ep9/24) [AD,S]
The Birthday Synchronicity: In the last Father's Day episode, Raj, Stuart and father-to-be Howard rush expectant mother Bernadette to the hospital, but are they too early? (S10 Ep11/24) [AD,S]
The Convergence Convergence: Conflict soon arises when Leonard's newly divorced mother and father are in town at the same time as Sheldon's devoutly religious mum. (S9 Ep24/24) [AD,S]
The Positive Negative Reaction: The gang find out about Bernadette's big news, but she is concerned when Howard freaks out over her announcement that he is to become a father. (S9 Ep16/24) [AD,S]
The Spock Resonance: Howard and Bernadette fall out over plans to renovate his childhood home, so Bernadette recruits her father for some advice about the building work. (S9 Ep7/24) [AD,S]
The Bachelor Party Corrosion: The girls force Penny to break the news to her family that she has eloped with Leonard, so she finally gives her father a ring to let him know. (S9 Ep3/24) [AD,S]
The Thanksgiving Decoupling: Howard takes the gang along to his mother's house for Thanksgiving to protect himself from Bernadette's grumpy father, who has also been invited. (S7 Ep9/24) [AD,S]
The Closet Reconfiguration: When Howard and Bernadette get Sheldon to organise their untidy closet, Sheldon finds an unopened letter from Howard's long-absent father. (S6 Ep19/24) [AD,S]
The Launch Acceleration: Howard tries to avoid his Nasa space mission, but he has to take part when he realises Bernadette's father only likes him because he's an astronaut. (S5 Ep23/24) [AD,S]
The Boyfriend Complexity: The first in a nine-episode stack featuring the antics of the characters' dads on Father's Day. Leonard makes a discovery when Penny's dad visits. (S4 Ep9/24) [AD,S]