Over the weekend two YouTube videos were released, the first named How to Sign Up for GoogleTV Beta and then a follow up named UPDATE: GoogleTV Beta. Both are attempts by the video author to prove that Google TV is a real thing. But so far, everyone reporting this knocks it down as elaborate hoax. Both Techcrunch and Google Blogoscoped call it a hoax, explaining that the DNS information doesn’t match. Is Google TV a possibility? I believe so. Is this it? I doubt it.
Postscript: See this article, FAQ: What We Know So Far About Google TV, for more information about the announcement of Google TV.