Here's the website everybody always links to when talking about the show:
http://www.gilsinan.com/raccoons/
Actually that's not bad considering that apart from primetime hits like the Simpsons, King of the Hill, Family Guy and South Park, most animated shows in both the US and Canada only run about 2-5 seasons. Sure, nowadays seven seasons isn't too impressive, but it's not really that low either. I'm not sure that it really is the longest-running Canadian cartoon anyway. One thing that
is fairly notable about it is that it was done completely in Canada as opposed to being sent overseas, and that it aired in primetime for most of its original run-- before the Simpsons! Gasp!!!!!11...
Anyway, I'm a huge fan of the show. I've got both the DVD sets, and I'm a member of the Yahoo group for it, where over half the series has now been found/uploaded online!

My favourite aspects of the series are the music, voice acting and the watercolour backgrounds.
Yeah, to clarify for those who haven't seen it-- despite the above comparisons with the Simpsons, it's more family-oriented, and the writing isn't as sophisticated. It's really more of a kids' show. About the DVDs, there were two sets with 9 episodes each, from the second and third seasons respectively. I believe they were Canadian-only releases. In September (I think) there's a British release of the complete first season coming out, which I hope gets released here as well.