Even at Star Trek conventions, they only let him in if he helps set up!

Well, if it isn't Wil Wheaton, the Jar-Jar Binks of the "Star Trek" universe.

Sheldon: And here's where we are -- the runts in a large litter unlikely to ever reach the nourishing teats of Indiana Jones.
Leonard: So it's good we stopped for dinner.

I find zombies dancing in choreographed synchronicity implausible. And also it's really scary.

No, Gorn, no! That's where I sit.

I don't like the Olive Garden. They treat me like family.

If we're changing topics, I believe I have dibs with the capybara, a rodent the size of a baby hippo.

Wolowitz: You love that spot.
Sheldon: No, I love my mother. My feelings for my spot are much greater. It is the singular location in space around which revolves my entire universe. And now it's yours.

I believe you were about to ask me to choose a cocktail. Fortunately, thanks to computer-savvy alcoholics, there's an app for that.

That was an experiment to determine at what concentration does food start tasting moth-y.

And to think! I was ready to waste the last of my good hemorrhoid cream on you!

Leonard: You put moths in my food!?
Sheldon: For science.

TBBT Quotes

You can't ruin a friendship with sex that's like trying to ruin ice cream with chocolate sprinkles.

Raj

Sheldon: Even the dung beetle chooses to plot its course by using the Milky Way.
Raj: Is that true?
Sheldon: Everything I say is true. Now, of course, the dung beetle also enjoys eating fece, living in feces and making little balls out of feces. So, pick and choose which aspects of its lifestyle you want to embrace.