I see a few cropping up already, the problem is I've had this current 'christmasy' one on since about October, so I need to change it, suggestions? 

Something with Arnie would be a safe bet.

Failing that, me and Clocked were having a discussion about who would be the new Arnie, perhaps its time for you to go out on a limb and choose that person then Xmas them up with a funkiy hat!