Slip sliding away - CO2 power hits the ice; what to do if Santa gets stuck up your chimney; knife, fork, spoon - which is Britain's best bit of cutlery? Which is Britain's most pain in the arse packaging? Jon Tickle gets in some seasonal slobbering; a gas oven, some explosives and a naked flame - you do the maths; Brainiacs feel the cold this Christmas; hitting the high notes - carol singing on helium; we give the top five tips for snowball fights, and what would happen if you pulled 500 crackers at once?