In the spirit of the Christmas season, a number of bands have posted their own covers of Christmas songs.
P.O.D. have posted a cover of Run DMC's, Christmas In Hollis (renamed, Christmas In Cali) on their MySpace.
Thrice and August Burns Red respectively, have posted their own version of Carol Of The Bells, the latter being done durning the recording of Messengers.
Project 86 will post their own Christmas song at 2pm Pacific today. Until then, you can listen to the first three songs off of The Kane Mutiny EP.
There's probably some out there that I missed, but feel free to add any that you find. I know that a death metal Christmas album came out last year, so there might be some bands that joined in on the fun and posted their's.