I've collected these appellations for Barack Obama while surfing the conservative side of the Internet. I'll add to the list as new ones crop up. Feel free to contribute your own.

Anointed One, The
B. Hussein Obama
B.O.
Bacrack Obama
Bambi
Bammy
Bamster, The
Barack Ilyich Lenin
Barack O'Change Obama
Barack The Magic Negro
Barack The Wealth Spreader
Barack W. Bush
Boy President, The
Chicago-Thug-in-Chief
Chief Walking Eagle
Chosen One, The
Community-Organizer-in-Chief
Comrade Obama
D'OHbama
Dear Leader
Dear Reader
Demagogue-in-Chief
Depression President, The
Duh One
Dumbo
Empty Suit, The
Empty-Suit-in-Chief
Fresh Prince of Bill Ayers, The
Gelding-in-Chief
God, Jr.
His O'liness
His Phoniness
Hopenchange
Hopey-Dopey-Change Goof, The
Hopiate of the Masses, The
Joker, The
Lightworker, The
Mau-Mauer-in-Chief
Messiah, The
Milhouse
Nobama
Obama bin Laden
Obama bin Lyin'
Obama Osama
Obama-one Yaphony
Obamanocchio
ObaMao
Obamateur
Obambi
Obamessiah, The
Obaminable
Obamination
Obammy
Obarfo
Obomba
Obowa
Obumma
Obysmal
Oclueless
Odopey
Odrama
Odumbass
Odumbo
OediPOTUS Wrecks
Ogabe
OmniPresident, The
One Big Ass Mistake, America
One, The
Osama Obama
Owebama
PBO
Precedent, The
President Christ Superstar
President Doubtfire
President Nancypants
President Pantywaist
President Poppins
President Punk
President Ron Burgundy
Promptee, The
Punk, The
Redistributor-in-Chief
Solomon Obama
Spineless Wonder, The
Squanderer-in-Chief
Teleprompter of the U.S. (TOTUS)
Teletubbie-in-Chief
Thug-in-Chief
Turkmenbama
Urkel
Waffles The Clown
Wizard of Uhhs, The