I always find it interesting when the child of a famous person also becomes famous but for different reasons. Did ol' Ziggy pull any strings to help junior? Maybe, but it's not like Moon didn't deserve to be made. Odds are against a parent and child both being famous (providing the parent doesn't pull strings), but there are enough famous people with kids that it would happened by coincidence. Now that I think of it, the child of a famous musician would have the benefits of wealth and a parent who at least doesn't discourage creativity, even if he doesn't do anything directly to help.
In other news, Max Brooks, who wrote World War Z and Zombie Survival Guide, is the son of Mel Brooks.