It's revealed that Kelly's middle name is Marcia.
Continuity goof: At least twice in this episode it is mentioned that Chuck went to Minneapolis after leaving Pittsburgh. However in the pilot episode, he says that he went to Denver, then Minneapolis.
Kelly: You heard what I said, Chuck is your father.
Gracie: I thought it was a sperm donor. (to Chuck) Was that you?
Chuck: Well, technically, yes.
Gracie: (to Kelly) Did you know it was his sperm?
Kelly: Uh, technically, yes.
Kelly: She just needs to be alone, so she can get her head around it.
Chuck: You're right. Maybe I should go talk to her?
Kelly: When I make sounds, what do you hear?
International Episode Titles:
Czech Republic - Chuck otcem (Chuck Being Father)
Original International Air Dates:
Australia: June 11, 2008 on Network 10
Denmark: June 13, 2008 on TV3+
United Kingdom: August 27, 2008 on More4
Latin America: October 26, 2008 on Canal Fox
Czech Republic: June 17, 2009 on Prima COOL
Chuck: (looking at a picture) So, who's this?
Gracie: Miley Cirus
Chuck: Oh, one of your little friends at school?
Gracie: Yeah, I go to school with Miley Cirus. Zack and Cody are in our class, too.
This is an allusion to Disney Channel stars Miley Cyrus and Dylan and Cole Sprouse, who star in Hannah Montana and The Suite Life of Zack and Cody, respectively.