Plot hole: The whole episode is based on false facts. Cody was getting an A in woodwork and Zack was failing in all his classes the previous year at school (according to their report cards in Ep "Smarter and Smarter"). So Cody knows a lot more about woodwork than Zack and should be able to make a clock, never mind a birdhouse, and Zack should not be able to make a clock.
Visible crew/equipment: At the beginning, you can see studio lights reflected on Zack's guitar during the song "Schools Out". (00:00:55)
Odd Couples - S2-E1
Cody: [Holds up chocolate pudding.] I found your pudding.
Zack: Oh, thanks. But I could've sworn it was vanilla when I lost it.
Trivia: London Tipton was supposed to be somewhat named after Paris Hilton. London and Paris (both cities) and Tipton and Hilton (Hotels).
Question: Where is Estaban from? He doesn't look like he came from America.
Answer: The show never says.
Brad ★