Obviously numerous versions of "I Saw Mommy Kissing Santa Claus" have been recorded since Jimmy Boyd first did in 1952, but the best clearly was the one performed by the Jackson 5 on their 1970 Christmas Album.
It's not merely the pop mastery of the group or the production, but the way young Michael says just before the solo:
"I did, I really did see Mommy kissing Santa Claus, and I'm gonna tell my dad."
Why does that put it above all others? Let's examine.