Being diagnosed with Parkinson's has given Michael J. Fox a new perspective on life, as well as a passion to help find a cure for the degenerative disease.
"I didn't have this passion when my biggest concern was how big my Winnebago was or . . . whether or not this movie was going to do as well as the last movie," the actor tells Jane Pauley on "Dateline NBC," which airs Monday.
Fox, 39, is writing a book about the experience due out this year, which he may title "Lucky Man."