Nah, there's still some Virginal Teenage girls in the USA...Oh, you were talking about a host of something, weren't you?In this case, neither is obscure.
Maybe, maybe not. To me though, when I saw Today, I thought it was going to be the BBC Radio Four morning news programme, the Today Programme. So guess what buddy, to me, they are both very obscure.
I'm sure to many Americans Blue Peter is pretty obscure too.