Ozzy, Metallica's Hetfield, U2's Bono, Gene Simmons, Dave Grohl Big Daddy's

On the Line, a national prostate cancer awareness campaign, is celebrating fatherhood with the Big Daddy Awards, which has celebrity fathers contending for top honors in 33 creative categories. A few of the musical men nominated this year include Foo Fighters' Dave Grohl, U2's Bono, Aerosmith's Steven Tyler, Kiss' Gene Simmons, Ozzy Osbourne, Lenny Kravitz, Metallica's James Hetfield and Jon Bon Jovi. Other categories pay tribute to dads from the sports, movie, TV and radio fields.