4. Nat King Cole/The Christmas Song
Total plays per season: 18,682
This song goes down as smooth and warm as subtly spiked egg nog, even on its 3,000th listen or so. For folks who disagree, fortunately there's that string intro that cries out like a klaxon before each play. How someone can be so bothered by two minutes of those dulcet tones is beyond us, but cynics can consider those strings a gift before skipping ahead on the iPod or shuffling stations.