Rush Hour

What is the song that Chris Tucker's character was singing? It was first towards the middle and he was trying to get Jackie Chan's character to do it properly. Then at the end, with headphones on, Jackie Chan's character was singing it on the plane. I have no idea what it is and I've searched and searched. If you can help I'll truly appreciate it.

Sincerely,
Mary J. S.

angelmoon2783, August 13, 2008; 12:35 AM