Watch S4, EP6: The Irish Pub Formulation with Fubo for $0 Today
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
How to watch
More episodes
The Big Bang Theory
S4, EP12 "The Bus Pants Utilization"Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.
The Big Bang Theory
S10, EP17 "The Comic-Con Conundrum"Cut off from his father's fortune, Koothrappali appoints Sheldon to help him get out of debt; Penny considers joining Leonard at Comic-Con.
The Big Bang Theory
S12, EP18 "The Laureate Accumulation"When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to win over Nobel laureates Kip Thorne, George Smoot and Frances Arnold; Halley's fear of the dark leads to opportunity and conflict.
The Big Bang Theory
S3, EP5 "The Creepy Candy Coating Corollary"Sheldon seeks revenge on his nemesis, Wil Wheaton; Wolowitz wants Penny to set him up with one of her friends.
The Big Bang Theory
S4, EP11 "The Justice League Recombination"The guys try to bond with Penny's new boyfriend through a costume contest.
The Big Bang Theory
S4, EP10 "The Alien Parasite Hypothesis"Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.
The Big Bang Theory
S4, EP9 "The Boyfriend Complexity"Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.
The Big Bang Theory
S4, EP8 "The 21-Second Excitation"While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
