The National Film Board of Canada has posted a number of short films on their website, for your viewing pleasure. This one in particular was a favourite of mine as a kid - they used it as a commercial replacement on the provincially-sponsored educational channel (basically the only one that didn't show ads during the after school kids tv hour).
I don't know why I liked this one so much - but I think the bits where it merges from real-life to animation and hten back again are my favourite parts. And the moose. Gotta love the moose! :)
If you have a moment, check out some of the other films - and don't forget the French ones too - French Canadians have a wicked sense of humour! :)