PRINCESS DIANA : When you rearrange the letters: END IS A CAR SPIN

MONICA LEWINSKY: When you rearrange the letters: NICE SILKY WOMAN  

DORMITORY: When you rearrange the letters: DIRTY ROOM  

ASTRONOMER: When you rearrange the letters: MOON STARER

DESPERATION: When you rearrange the letters: A ROPE ENDS IT

THE EYES: When you rearrange the letters: THEY SEE

A DECIMAL POINT: When you rearrange the letters: IM A DOT IN PLACE

AND FOR THE GRAND FINALE:

MOTHER-IN-LAW: When you rearrange the letters: WOMAN HITLER