MacRumors.com

Apple has added frameworks for a number of new shows from different networks on the iTunes Music Store. At the time of this posting, most of listings did not have shows available for download, but the following pages have appeared in iTunes:

The N - South of Nowhere (Season 1)
SOAPnet - Soapography (Season 1)
Nickelodeon - SpongeBob SquarePants (Season 1), Dora the Explorer (Season 1), Zoey 101
MTV - Beavis and Butt-Head, Laguna Beach, Wonder Showzen, Gauntlet 2, My Super Sweet 16 (Season 1-2), Jackass, Punk'd (Season 1-3)
Comedy Central - South Park (Season 1-2), Drawn Together (Season 1-2), Best of Comedy Central Stand-Up
ABC Family - Wildfire (Season 1-2)

As previously noted, Disney has also included a number of new short films as well.

Update: The Munsters and The A-Team were also recently added.