People remember some really dumb, insignificant stuff as long as it's catchy. One little thing that I can't get out of my head is a jingle from one of the excellent You Don't Know Jack games, either #2 or #3. YDKJ was a series of popular and very clever trivia games, and before each question, there would be a couple-second jingle to introduce it. One of the jingles for question 17 was a Cajun-sounding man cheerily singing:
On the big bayou in Loooooooosiana, Question Sev-onnn-teen!
That must have been like a decade ago, and that jingle still rings in my head on a fairly regular basis. Sometimes I catch myself humming it in my apartment.