Funny / The Periodic Table of Videos

• In "Helium (some extra stuff)":
  • Before The Professor inhales helium:
    The Professor: Well, I am nervous. I've just read on Wikipedia that somebody died after breathing helium. But I hope it won't happen now. Make a good video if it does.
  • Pay attention to Neil in the background while the Professor speaks after inhaling helium. He's struggling not to crack up.
• In "Cobalt (new)", the Professor shows us a nice glass jar that everybody tells him is a 19th century Christmas tree light with a candle in it. Cue the cameraman asking him if he bought it in the 19th century.
• "Professor Look-Alikes" is about showing the cast a picture of five Hihi birds whose messy "hair" resembles the Professor's Einstein Hair. The Professor's reaction and the ensuing exchange is gold:
  The Professor: Gosh! It's extraordinary. (...) They seem to have hair that is rather like mine.
  Brady: I think that was the point. [laughs]
  The Professor: But they have a much bigger mouth than me.
  Brady: I don't know about that. [laughs]
  The Professor: And also, there are five of them. I don't think there are five of me.