A few places to look and then:
Afroman - Violent Night
Atmosphere - If I Was Santa Claus
Bob Rivers - What if Eminem Did Jingle Bells
Bone Thugs - Carole of the Bones
Dirt Boyz - Crunk Christmas
DJ Genius - Christmas In Da Ghetto
Eazy-E - Merry Muthafuckin Xmas
Ghostface Killah - Ghostface Xmas
Jamie Foxx - Christmas List
Juelz Santana - Christmas in The Ghetto
K A N S - Whachugot4Xmas
Ludacris - Ludacrismas
Nate Dogg - Be Thankful
OFTB - Christmas In The Ghetto
Operation Silver Bells (War is not over)
Quad City Djs - 12 Ghetto Days of Christmas
Run DMC - Christmas In Hollis
Skull Gang - Merry Christmas
Snoop Dogg - Santa Claus Goes Straight To The Ghetto
Snoop Dogg, Puff Daddy, Keith Murray, Salt N Pepa & Onyx - Santa Baby
The 69 Boyz - Whatcha Want For Christmas (Remix)
Alan will also have a mix more to your liking with a lot of real old school christmas songs.