MINISERIES PREMIERE: This new CNN miniseries by Tom Hanks and Gary Goetzman, a follow-up to their previous decade retrospectives The Sixties and The Seventies, begins, as did those others, by looking at the decade through the eyes (or the eye) of television. But this time, this opening installment is expanded to two hours, allowing for twice as much discussion of the era that gave us Hill Street Blues and MTV and Miami Vice and The Cosby Show and the finale of M*A*S*H. This time around, I should disclose as a combination point of pride and warning, I’m not only on camera as a TV critic, but served behind the scenes as a consultant. So if you don’t like this installment of The Eighties, feel free to blame me twice.