Tommy Lee is to narrate a new documentary about a rocker's battle with leukemia. The Motley Crue drummer has befriended Jack's Mannequin founder Andrew McMahon, and jumped at the chance to tell his life story in new film Dear Jack.

Lee played drums on Jack's Mannequin's debut album.

The new movie chronicles the beginnings of the band, Andrew's relationship with his now-wife Kelly and the immense impact both had on his fight with cancer.

Lee says, "Andrew is such a hero and I jumped at the opportunity to help tell this incredible story."

-Tommy Lee Pictures

(This news article provided by World Entertainment News Network)