This is sort of like the Prince thread we had a while back can you think of any big names that have been on cds/albums? Here are a couple.

EDDIE VAN HALEN (BEAT IT)
SLASH (BLACK OR WHITE)
VINCENT PRICE (THRILLER)
PAUL MCCARTNEY (THE GIRL IS MINE & SAY SAY SAY)
MICK JAGGER (STATE OF SHOCK)

Steve Stevens - Beat It (Dirty Diana) :D

Who can forget the classic "Somebody's Watching Me" by Rockwell? Oh, you said big names...:p

Stevie Wonder - Get It

Diana Ross (ease on down the road) 1978
Siedah Garrett (I just can't stop loving you and Man in the mirror) 1987
Jimmy Smith (popular organ player in the 50's and 60's)(Bad) 1987
Winans and Adrae Crouch choir (Man in the mirror) 1987
Princess Stephanie of Monaco (In the closet) 1992
Heavy D (Jam) 1992
R Kelly (You are not alone) 1995