DORMITORY:
When you rearrange the letters:
DIRTY ROOM
PRESBYTERIAN:
When you rearrange the letters:
BEST IN PRAYER
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
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
ELECTION RESULTS:
When you rearrange the letters:
LIES - LET'S RECOUNT
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:
MOTHER-IN-LAW:
When you rearrange the letters:
WOMAN HITLER
sallyontour
Pro

Love 'em.
Here's some more of my favourites:
Margaret Thatcher - Grrr! A hatchet, mate!
Margaret Hilda Thatcher - Elder matriarch, that hag
Adolf Hitler - Heil, old fart!
Tony Blair - A lib 'n' Tory
Michael Heseltine - Elect him, he's alien
Chairman Mao - I am on a march
Clint Eastwood - Old West action
William Shakespeare - I'll make a wise phrase
Yasmin Le Bon - Mainly bones
Alec Guinness - Genuine class