An anagram, is a word or phrase made by or rearranging the letters of another word or phrase. The following are exceptionally clever.

Someone out there either has way too much time to waste or is deadly at Scrabble.

Word - Anagram
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Dormitory - Dirty Room
Desperation - A Rope Ends It
The Morse Code - Here come Dots
Slot Machines - Cash Lost in 'em
Animosity - Is No Amity
Mother-in-law - Woman Hitler
Snooze Alarms - Alas! No More Z's
Alec Guinness - Genuine Class
Semolina - Is No Meal
The Public Art Galleries - Large Picture Halls, I Bet
A Decimal Point - I'm a Dot in Place
Eleven plus two - Twelve plus one
Contradiction - Accord not in it
Astronomer - Moon Starer
Princess Diana - End Is A Car Spin

AND HERE IS THE MOST INTRIGUING PART
Year Two Thousand - A Year To Shut Down