“All I Want for Christmas Is You” by Mariah Carey (2/20)

This giant hit is by far the best-selling modern Christmas song, and is one of Mariah’s biggest seasonal money-makers to this day (of course she’s the voice on it, but she also co-wrote the hit). Amazingly, the song never made it to number one on the charts, and the best it did was the respectable in 1994. Yet, there’s no chance we won’t hear the song on the radio anytime soon – it made it to the top 40 every year since 2007.