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06x06 - The Extract Obliteration Season 6 / Episode 6: - The Extract Obliteration

Sheldon Cooper: Earlier today, I invited Professor Stephen Hawking to join me in the popular online game Words With Friends. Moments ago, he accepted my request! Do you understand what that means?
Howard Wolowitz: That somewhere right now, Stephen Hawking is saying, "Damn it. I meant to click no."
06x06 - The Extract Obliteration Season 6 / Episode 6: - The Extract Obliteration

Amy Farrah Fowler: [to Penny] You've got to be the weirdest couple I know.
Penny: Really? You can't think of anyone weirder?
Amy Farrah Fowler: [whispering and referring to Bernadette] I can... but she's sitting right there.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Leonard Hofstadter: You know, there's a foundational idea in string theory that the whole universe may be a hologram.
Penny: What do you mean?
Leonard Hofstadter: Well, the holographic principle suggests that what we all experience every day in three dimensions may really just be information on a surface located at the farthest reaches of our cosmos. So it's possible that our lives are really just acting out a painting on the largest canvas in the universe.
Penny: Huh.
Leonard Hofstadter: What?
Penny: Sometimes I forget how smart you are. [kisses Leonard]
Leonard Hofstadter: You should visit more often.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Raj Koothrappali: Preparing for your Halloween party?
Stuart: Yeah, it's my annual attempt at meeting women. Ninth time's the charm.
Raj Koothrappali: Maybe I can help. I have a certain je ne sais quoi when it comes to soirees.
Stuart: I can't afford je ne sais quoi. How much for just quoi?
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Amy Farrah Fowler: Ladies night at the Cheesecake Factory. Does it get any better than this?
Penny: I hope so.
Amy Farrah Fowler: [to Bernadette] Do you think your husband's fondness for turtlenecks because he misses his foreskin?
Penny: Not getting any better.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Raj Koothrappali: For the photo booth, we could go with a creepy theme, or we could also get the TARDIS from Dr. Who.
Sheldon Cooper: The TARDIS is a time machine from a sci-fi show, it has nothing to do with Halloween. That being said, if you don't get a TARDIS, then you stink and your party stinks.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Howard Wolowitz: Astronaut Wolowitz reporting for booty.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Amy Farrah Fowler: I'm Raggedy Ann, and he's Raggedy C-3PO.
Sheldon Cooper: We compromised. I lost.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Sheldon Cooper: Raggedy Ann and Andy stand for three things I don't care for: clowns, children and raggediness.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Bernadette Rostenkowski: Let me guess. Slutty cop?
Penny: No, sexy cop. Slutty cop only came with the skirt and two badges.
06x05 - The Holographic Excitation Season 6 / Episode 5: - The Holographic Excitation

Bernadette Rostenkowski: What's that?
Howard Wolowitz: It's just a video Raj sent me of Buzz Aldrin.
Buzz Aldrin: [Handing out Halloween candy to trick-or-treaters] Here's a Milky Way. The Milky Way is a galaxy in space. I've been to space. Here's a Mars bar. I'm an astronaut. This one's a Moon Pie. I've walked on the moon. What have you done?
Howard Wolowitz: Okay, I get it.
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Sheldon Cooper: It's been a good run, Fake Wolowitz. We'll remember you with fond nostalgia, like the dial-up modem, the VHS tape and Leonard's gym membership.
Raj Koothrappali: I don't want Stuart to leave. We've become good friends.
Sheldon Cooper: Okay, that's one vote for, one against. Leonard, you're the tie breaker.
Leonard Hofstadter: I don't mind Stuart. Besides, he gives us 20% discounts on comic books.
Sheldon Cooper: My friendship isn't sold so cheaply.
Stuart: I can go as high as 30.
Sheldon Cooper: Welcome aboard, old chum.
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Sheldon Cooper: [on Howard] He left a boy, he returns a boy-sized hero.
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Howard Wolowitz: [as he steps out of the plane, he is met with a crowd chanting "Howie!" - for Howie Mandel, who is next to him] Thank you, it was nothing really.
Howie Mandel: I think they're here for me, Ringo.
Chauffeur: Mr. Mandel, I'll be your driver.
Howie Mandel: Thank you. Can you believe that guy was telling everyone he was an astronaut?
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Penny: Sheldon, you're full of fun little facts. Where do you think the expression "have your ass handed to you" come from?
Sheldon Cooper: I don't know.
Penny: I bet it was from ancient Rome, where they actually chopped off someone's ass and went "Here" as an offering to Loseronius, the God of Losers.
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Penny: We're not playing a made-up game.
Sheldon Cooper: All games are made up. They're not found in nature. No one digs on the ground and finds a rich vein of Rock'em Sock'em Robots.
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Sheldon Cooper: [after losing at "Where's Waldo"] How could you not find him?
Leonard Hofstadter: Because he's hard to find! If he was easy to find, the books would be called "There's Waldo!"
06x04 - The Re-Entry Minimization Season 6 / Episode 4: - The Re-Entry Minimization

Sheldon Cooper: [At a pie-eating contest] I'm concerned about all these blueberries. Blueberries are rich in anti-oxidants.
Leonard Hofstadter: So?
Sheldon Cooper: With all those anti-oxidants, what if I run out of oxidants?
Leonard Hofstadter: Sheldon, we haven't won a single game. Either you put your face in that pie, or I will put the pie in your face!
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Sheldon Cooper: [about his toilet training journal] There's a chart in the back describing shape, color and consistency.
Penny: Disgusting!
Leonard Hofstadter: No, what's disgusting is that he's still keeping track.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Penny: Maybe I can do it.
Sheldon Cooper: Oh, really? You think you can evaluate my work?
Penny: Uh-huh.
Sheldon Cooper: Here. I wrote this when I was five.
Penny: "A Proof That Algebraic Topology Can Never Have a Non-Self Contradictory Set of Albelion Groups." I'm just a blonde monkey to you, aren't I?
Sheldon Cooper: You said it, not me.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Alex Jensen: I'm Alex, Dr. Cooper's new assistant.
Leonard Hofstadter: Nice to meet you, and may God have mercy on your soul.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Sheldon Cooper: Save all chatting for your break, and FYI, there will be no breaks.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Penny: This is an eyelash curler. You put it on your eyelashes and squeeze close.
Amy Farrah Fowler: I don't know. This looks like something used by Tinklebell's gynecologist.
Penny: Well, I hope for her sake it's not Captain Hook.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Amy Farrah Fowler: [Shows Penny a picture of Sheldon in her phone] Look at this face. How can any woman spend eight alone with this face and not fall in love with it?
Penny: Well, for starters, eventually that face starts talking.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Raj Koothrappali: So, did Alex say anything about me?
Sheldon Cooper: Yes. I believe her exact words were "What is that guy's problem?"
Raj Koothrappali: I'm in her head. Let the dance begin.
06x03 - The Higgs Boson Observation Season 6 / Episode 3: - The Higgs Boson Observation

Alex Jensen: My father works for SETI.
Leonard Hofstadter: SETI, the Search for Extra Terrestrial Intelligence. You should introduce him to Sheldon. The search is over.
06x02 - The Decoupling Fluctuation Season 6 / Episode 2: - The Decoupling Fluctuation

Sheldon Cooper: If you're going to replace Wolowitz I need to know a little more about you.
Stuart: Alright.
Sheldon Cooper: Wolowitz went to MIT. What's your educational background?
Stuart: I went to art school.
Sheldon Cooper: Equally ridiculous, let's go.
06x02 - The Decoupling Fluctuation Season 6 / Episode 2: - The Decoupling Fluctuation

Bernadette Rostenkowski: And my next wedding present is... a gravy boat.
Penny: [Writing it down] One gravy boat.
Amy Farrah Fowler: That's from Sheldon. He had it engraved.
Bernadette Rostenkowski: [Reads engraving] "In case of divorce, please return to Sheldon Cooper."
Penny: One inappropiate-yet-I-wish-I-thought-of-that gravy boat.
06x02 - The Decoupling Fluctuation Season 6 / Episode 2: - The Decoupling Fluctuation

Leonard Hofstadter: I took Sheldon to the dentist today.
Penny: Uh-huh.
Leonard Hofstadter: I promised him that if he didn't bite the dental hygenist this time, I'd take him for ice-cream. I didn't have to take him for ice-cream.
06x02 - The Decoupling Fluctuation Season 6 / Episode 2: - The Decoupling Fluctuation

Penny: Do you feel that way about Howard?
Bernadette Rostenkowski: I don't think it's a fair comparison. He's basically a sexy Buzz Lightyear.
Penny: What about you, Amy?
Amy Farrah Fowler: Whenever I'm with Sheldon, I feel like my loins are on fire. But in a good way, not in a urinary tract infection way.