These Real Player things...

How many other TV shows have can you download full episodes for? I've seen one other than South Park, and that's the Simpsons (surprise, surprise!). So, does anyone know of any other shows with the same treatment, and if not, why do you think only South Park did originally (as Simpsons fans are just doing this recently)?

Apparently Dawson's Creek also has all of the episodes available in .rm format online, although I've never downloaded them because Global has kept up with the WB on that show (not like South Park where we're still waiting for season 3 in Canada).