I'll admit that K9 was used very badly by many of the writers - but when he was used right he was lots of fun and was a nice counterpoint to Tom Baker's increasingly nutty performances. Douglas Adams and Baker/Pedler spring to mind as people that *could* write K9 well. In many ways Cpt Jack fills a similar role to K9 when he was written right (which probably leads to highly disturbing slash-avenues...).
(no subject)