Rich Little's Christmas Carol aired on HBO in 1978 - a safe distance in years and quality from that network's future "Sopranos" golden era.
Little was/is an impressionist - almost certainly the most successful one of his generation. But he had an unfortunate penchant for doing cringe-inducing Edith Bunker impressions. They weren't even close. The voices he does here (W.C Fields, Paul Lynde, Nixon and such) are among his better ones.
He was much better than Frank Caliendo, but that's not saying much, is it?