Three I'd like to share =)
A skit in the J5 era:
link Him messing around with Latoya:
link ^ I love "Would u shut up u fat head rascal?", "I have an idiot for a sister folks." and "Of course, honey."
Rare family footage:
link ^ Throughout this footage MJ is messing around.. Like "(funny voice) Uh, we're out here today and the weather is nice." and "You see that ugly ape over there? That's Randy Jackson." And one part he goes to talk to Janet and says "I am now talking to... (funny voice) Mrs. JELLY." the volumes REALLY low so wear earphones of something.