This was originally lower, but I have a funny story about this song that pushed it up a little bit.
A few months after I met my girlfriend, I met her family. She has a 2 1/2 year old niece who is a pretty perceptive little girl. Anyhow, as I feel that kids shouldn't just listen to the Wiggles and crap like that, I made a CD of "kid-friendly" music that she could listen to in the car. The CD included (among others) "Crabbuckit" by k-os, "Around the World" by Daft Punk, "Just Like Heaven" by the Cure, and"1, 2, 3, 4" by Feist.
A few weeks ago, I was having lunch at their house and she started singing "1, 2, 3, 4". She doesn't really know the words outside of "1, 2, 3, 4, 5, 6, 9, and 10", and she just repeats this, but now we've encountered a new problem: when she counts to ten, she skips 7 and 8.
Feist: warping the concept of counting for young children since 2003!
Feist - 1, 2, 3, 4