DORMITORY: When you rearrange the letters: DIRTY ROOM

PRESBYTERIAN: When you rearrange the letters: BEST IN PRAYER

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

GEORGE BUSH: When you rearrange the letters: HE BUGS GORE

THE MORSE CODE: When you rearrange the letters: HERE COME DOTS

SLOT MACHINES: When you rearrange the letters: CASH LOST IN ME

ANIMOSITY: When you rearrange the letters: IS NO AMITY

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

SNOOZE ALARMS: When you rearrange the letters: ALAS! NO MORE Z 'S

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

THE EARTHQUAKES: When you rearrange the letters: THAT QUEER SHAKE

ELEVEN PLUS TWO: When you rearrange the letters: TWELVE PLUS ONE

AND FOR THE GRAND FINALE:
PRESIDENT CLINTON OF THE USA: When you rearrange the letters (With no letters left over and using each letter only once): TO COPULATE HE FINDS INTERNS

Ps: Jac, if u find this familiar, pls dont sue me for copyright!