Here are some more
Rob Morrow (child: Tu Morrow)
Gwen Stefani and Gavin Rossdale (child: Zuma Nesta Rock)
Penn Jillette (child: Moxie Crimefighter)
Jason Lee (child: Pilot Inspektor)
Nicolas Cage (child: Kal-El)
Reality star David "Puck" Rainey (child: Bogart Che Peyote)
Bob Geldof and Paula Yates (child: Fifi Trixiebell)
Paula Yates and Michael Hutchence (child: Heavenly Hiraani Tiger Lily)
Shannyn Sossamon (child: Audio Science)
Katie "Jordan" Price (child: Princess Tiaamii)
Michael Jackson (child: Prince Michael II)
Michael Jackson (child: Blanket)
Jermaine Jackson (child: Jermajesty)
I could go on but look at
http://www.babble.com/celebrity/celebrity-style/33-worst-celebrity-baby-names/ for more names