I am putting it under the cut in case you consider that a spoiler.
He talked about how two episodes they've been thinking about for a while were an animated/cartoon episode and a musical.
I stopped right there. Whaaa?
Now, so far SPN has given us episodes like being sucked into TV shows and "alternate realities" where the characters are actors/comedic versions of themselves. And that's pretty cracky. But man, they made it work.
If they ever do a cartoon or a musical, I have faith it'll work too. I never thought a puppet could work on Angel and look how that turned out!
So I guess we'll have to see!
*keeps hoping for a Season 7 anyway*