Raj: So Star Trek and Star Wars characters can go on the same branch?
Leonard: I know, it's crazy. Welcome to the Thunderdome, people!

Leonard: You'll have nerds fawning all over you. If you don't love that, this marriage is in trouble.

Penny: This is getting old fast, Dolores, knock it off!
Sheldon: Uh, do you really think calling me names is helpful?
Penny: I do! Your life is fine, you big baby!
Sheldon: Maybe you're right.
Amy: Really?!
Leonard: If it helps, I'm questioning your life choices, too.

Leonard: No, we don't need to be cheered up. It just turns out that physics is exactly like Lost. Started out great, and turns out just a big old waste of time.

Leonard: Oh, I knew it, Sheldon changed the password.
Penny: Are you sure?
Leonard: Well, the new network name is, "Ha ha ha, now I've got you," so It's either Sheldon or Gargamel from The Smurfs.

Sheldon: Oh, Meemaw got a new set of teeth. Oh, but then she found her old ones. Oh, so now the new ones are just gonna be her church teeth.
Leonard: Fun. Like your Comic-Con Spock ears and your around the house Spock ears.

Leonard: I love you.
Penny: I love you, too.
Leonard: And you're gonna do great. Just relax, stay out of your head, and try to enjoy it.
Penny: Aw. That reminds me of what I said to you the first time we slept together.
Leonard: I still use it. It's a mantra.

Leonard: That's two proposals, one day. Sounds like someone wants to spend the rest of their life telling people how to spell the name Hofstadter.

Leonard: Ahh, Sheldon's texting me to drive him to Bernadette's.
Penny: Well, what are you gonna say?
Leonard: Well, they did just introduce the middle finger emoji. If it's not for this, I don't know what it's for.

Sheldon: What, why did you get a party sub?
Leonard: People are coming over, it looked fun.
Sheldon: Well, we're only watching Game of Thrones. A party sub implies it's a party.
Leonard: Your attendance implies its not.

Penny: So, what are you thinking for dinner?
Leonard: Well, it's Thai food night.
Penny: Well, honey, you don't live with Sheldon any more. You can have anything you want.
Leonard: You're right. But what? Mexican? Italian? German? Indian? Greek? Cuban? Chinese? Pizza? Barbecue? Korean? Korean barbecue?
Penny: How about Thai food?
Leonard: Oh, thank God.

Leonard: Let's look at our pictures; that-that'll jog our memories.
Penny: What is that a picture of?
Leonard: Oh, uh, that's a mole on my back. I wanted to make sure it wasn't growing.
Penny: How'd you get a picture of your own back?
Leonard: Sheldon took it. We're kind of mole buddies.

Sheldon: Leonard, I've been working on an opening joke for our lecture at Berkeley.
Leonard: Oh, I like to laugh. But say it anyway.

Penny: Hey, that's a cute picture. Isn't that the day we almost went to the beach?
Leonard: Memorial Day?
Penny: No, that was the day we almost went to the mountains.
Leonard: Oh. That's the great thing about California; you can almost go to the mountains and almost go to the beach in the same day.
Penny: Yeah.

Leonard: Look, Sheldon, you were a jerk to Bert, and he walked away from you. So I feel like there's a lot he could teach me.