In an effort to eradicate Leslie Hall earworms stuck in my brain (thanks to jockbdboy), my coworker was somewhat successful by injecting "Rainbow Connection" into my gray matter, but it led to a deeper discussion. The song starts with "Why are there so many songs about rainbows and what's on the other side?" Which led us to ask, "Really? How many songs are there about rainbows?" We can only think of "Somewhere over the Rainbow."