Pokemon: Pikachu no Fuyuyasumi (2001) - episode 1 - 21 Dec, 2000

Whilst Playing, Totodile accidently shoots a snowball into the air hitting a Delibird, being Santa's Delibird all it's presents are thrown about everywhere. Its up to Pikachu & co. to get the Presents back before Christmas is ruined. (Source: Anime News Network)