Host Jeff "JJ" Johnson highlights the invention of the Band-Aid as well as the can opener and sunglasses. He explains the whys of the CDMA vs. GSM phone signal and why Sixth Avenue in New York City has two names. He also focuses on the origins of the bridal dress and the bridesmaid dress. Finally, he explores the blue note in jazz music. Part of the "Wow! I Never Knew That!" series.