I tend to forget the existence of The Rat Pack and their ilk the rest of the year, but it just isn't Christmas without them. I need Bing Crosby, Frank Sinatra, and Nat King Cole (those three at least!) or something is just off about the season.
Here's one of my favorite Christmas songs, and it's just not right unless Bing sings it:
What's your favorite Christmas song, or which song is it just not Christmas without?