Carlton 1999-2002. I am very jealous of people in the London, Central and Westcountry regions who had them instead of the rather inferior blue spinning hearts (and then later on just the short lines ident).
The Carlton '99-'02 idents are my favourite. All of them, even the Christmas idents.
AlexEdohHD13, Fan of BBC, ITV, and Channel 4 Programmes.