Does that mean I can call myself Jim Liddane RM?

(On second thoughs, in Ireland, RM stands for Resident Magistrate, so lest I am accused of impersonating a judge - perhaps not).

"Jim Liddane is to answering difficult trivia questions what Jim Rockford is to solving difficult cases".

Only if it has to do with songwriting - the rest of it, I know nothing about, but since you mention Jim Rockford - here goes.

What is the connection between Jim Rockford and Connie Stevens? (And Eddie Cochran, too, come to think of it)