Tasty Mystery Baskets of Clips

He probably feels that it's doubtful that his mother will be overly impressed...
You're right. I'm sorry.
It's all right, Sheldon.
- Well, I just... I thought... - If I could interject here.
So how about you? Are you seeing anyone interesting?
- Have you heard your brother's engaged? - No.
Yikes.
Yes, dear. Mommy's proud.
Excuse me, but the sun is essential for all life on Earth.
You know, for a non-physicist, you have a remarkable grasp...
What do you mean, you don't know what I'm talking about?
Shall we switch topics to Isaac Newton v. Gottfried Leibniz?
Oh, yes.
Aw, I always tear up when the Grinch's heart grows three sizes.
Sheldon, when did I leave Leonard's father?
I blame Penny too. Bad Penny.
Why were you keeping this a secret?
...could not possibly form a Bose condensate.
- When did this happen? - Well, let's see.
Another round for me and my homegirl.
Fa-la-la-la-la-la-la-la-la.
Right, the weekend after Leonard's dog died.
...by the fact that I haven't had intercourse with him in eight years.