Yeah, I've noticed the injected video my ISP, Turkcell Superonline. Only works with sites with no HTTPS/HTTP->HTTPS redirection since they can't proxy sites with SSL.
Interestingly, I don't get the Erdogan's message on my cell. My friends tried calling me last night to hear the message, they don't hear it when they call me either. Could be related to me using my networks -paid- call ring tone customising app.