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Watch The Big Bang Theory Season 8 Episode 24On The Big Bang Theory Season 8 Episode 24 Sheldon has to deal with serious changes in his own relationship as he pushes Leonard and Penny to set a date.
Watch The Big Bang Theory Season 8 Episode 23On The Big Bang Theory Season 8 Episode 23, Christine Baranski and Laurie Metcalf guest star as Leonard and Sheldon's mothers in 'The Maternal Combustion'
Watch The Big Bang Theory Season 8 Episode 22On The Big Bang Theory Season 8 Episode 22, it's 'The Graduation Transmission' has angry dads, sexy grads and the one suggestions that geniuses never want to hear.
Watch The Big Bang Theory Season 8 Episode 21On The Big Bang Theory Season 8 Episode 21, when Raj is asked by NASA to craft a message for the extraterrestrials the guys battle over what it should be.
Watch The Big Bang Theory Season 8 Episode 20On The Big Bang Theory Season 8 Episode 20, Sheldon and Amy come to a serious crossroads in their relationship when they build a blanket fort together.
Watch The Big Bang Theory Season 8 Episode 19On The Big Bang Theory Season 8 Episode 19, Raj and Amy offer to settle an argument for Howard and Bernadette with ping pong, and Leonard and Sheldon take a road trip.
Watch The Big Bang Theory Season 8 Episode 18On The Big Bang Theory Season 8 Episode 18, the gang has a final family dinner in Mrs. Wolowitz's honor and Leonard is upset when he fails to get credit for a paper he cowrote with Sheldon.
Watch The Big Bang Theory Season 8 Episode 17On The Big Bang Theory Season 8 Episode 17, Amy realizes that Sheldon has applied for a one-way mission to Mars and Leonard shocks Penny with a special purchase.
Watch The Big Bang Theory Season 8 Episode 16On The Big Bang Theory Season 8 Episode 16, Sheldon and Penny try an experiment designed to make participants fall in love while the rest of the gang tries to escape a zombie.
Watch The Big Bang Theory Season 8 Episode 15On The Big Bang Theory Season 8 Episode 15, Raj and Leonard run into a restaurant customer who looks a lot like actor Nathan Fillion while Stuart reopens his comic book store.
Watch The Big Bang Theory Season 8 Episode 14On The Big Bang Theory Season 8 Episode 14, Leonard and Sheldon must take on an online bully when they co-publish a paper and the girls remember embarassing moments.
Watch The Big Bang Theory Season 8 Episode 13On The Big Bang Theory Season 8 Episode 13, Sheldon asks all of his friends to challenge him in order to help him make a scientific breakgthrough.
Watch The Big Bang Theory Season 8 Episode 12On The Big Bang Theory Season 8 Episode 12, Wolowitz tries to help distract Raj as he awaits data from his space probe while Sheldon and Leonard go dress shopping with Penny and Amy.
Watch The Big Bang Theory Season 8 Episode 11On The Big Bang Theory Season 8 Episode 11, a a Scrooge-like Sheldon buys Amy the worst possible gift while Leonard and Howard scramble to remove a pigeon that flew into the clean room.
Watch The Big Bang Theory Season 8 Episode 10On The Big Bang Theory Season 8 Episode 10, Sheldon ends up giving a tearful goodby to 'Fun with Flags'
Watch The Big Bang Theory Season 8 Episode 9Sheldon ends up needing sympathy when Leonard has minor surgery on his nose on The Big Bang Theory Season 8 Episode 9.
Watch The Big Bang Theory Season 8 Episode 8On The Big Bang Theory Season 8 Episode 8, Sheldon is leery as Amy and Bernadette throw a prom on their rooftop. Sheldon and Amy's relationship takes a big leap forward.
Watch The Big Bang Theory Season 8 Episode 7On The Big Bang Theory Season 8 Episode 7, the guys try to help Penny deal with a smitten doctor after she gives a flirtatious sales pitch.
Watch The Big Bang Theory Season 8 Episode 6Sheldon and Raj end up taking an experimental expedition into a steam tunnel on The Big Bang Theory.
Watch The Big Bang Theory Season 8 Episode 5The guys end up with new ways to procrastinate when they look for a way to come up with something cool on The Big Bang Theory.
Watch The Big Bang Theory Season 8 Episode 4Raj regrets being so open about his past when his girlfriend gives Penny the cold shoulder on The Big Bang Theory.
Watch The Big Bang Theory Season 8 Episode 3On The Big Bang Theory, the gang supports Howard as he prepares to throw the first pitch at an Angels game and Sheldon thinks his relationship is superior to Leonard's.
Watch The Big Bang Theory Season 8 Episode 2When Sheldon must teach a class, the gang is shocked when Howard signs up to take it on The Big Bang Theory.
Watch The Big Bang Theory Season 8 Episode 1Leonard and Amy take an unexpected road trip to Arizona on The Big Bang Theory Season 8. They must pick up Sheldon there.
Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.
Now, typically I wear pajamas, but I recently adopted a hobo lifestyle and pajamas are the sleep-pants of the Man. I'll have you know, Mahatma Gandhi wore no pants and a nation rallied behind him!
Sheldon