I have been saying for quite awhile that many believe that the Smith's are closet scientologists. They all do that "am all, be all; singer,actor,rapper,heavy metal singer" thing.
They all push the limits-all 4 of them and expand into areas of "talent" that exceed their innate or proven abilities (don't believe me? just TRY to listen to one of Jada Smith's heavy metal songs). And the little girl with her "pull my hair (or whatever) ditty is a real talent wreck.
But all of this limit pushing is what the scientoligist believe in-IF they are using L.Ron's techniques that allow them to do it.
I think that Smith's pr people have probably strongly advised him to not come out as a Scientologist-
The bad rap would wreck him as it almost did Cruise.
But hey, if the acting/singing thing doesn't work for Jaden and his sis there is always the church's "Sea Org"!!!
http://www.ask.com/wiki/Sea_Org?o=2801&qsrc=999