Newgrounds taught me about the "fair use" defense when parodying wayyyyy back when their "Teletubby fun land" got them the ire of the BBC's lawyers. I can't find anything documenting that saga -- in fact, it looks like a lot of the early content from before the "auto portal" an early precursor to video portal like Youtube -- called such because for a spell you had to email Tom your work to be featured in the "portal"…
I remember reading an article about how Newgrounds was contacted by the BBC around the time the Teletubbies game was published and they thought they were in trouble for the Teletubbies game, but actually the email was about interviewing them about the success of their Club a Baby Seal game.
There's a press section, but nothing directly from the BBC