He Vants to Be Alone

9/6/2008 12:10 PM PDT BY TMZ STAFF
Maybe he didn't want people to see those unsightly liver spots you get when you turn 50, but whatever the reason, Michael Jackson was the invisible manboy at a family event.

BMI honored the Jackson 5 and Janet Jackson in L.A. but Jacko was nowhere to be found. Jermaine, who is never germane, reportedly was also a no show but no one cared.