Penny: Well, as it turns out, there is a little reception for Mr. Gates tomorrow night. I asked if I could bring you, and they said yes.
Penny: Yeah, you get to meet Bill Gates again.
Leonard: Wait, what do you mean "again"?
Penny: 'Cause you met him that one time with your mom.
Leonard: Yes. And then again tomorrow, for a total of two, and only two times.
Penny: Yeah. I wonder if he'll remember you.
Leonard: Yeah, I wonder that, too.