Magnum to me is pretty much the logical heir to Jim Rockford in the fact that many of the same themes that were so prevalent on Rockford were on this show. Magnum to me was an ordinary guy who got caught up in extraordinary situations just like Rockford, but unlike Rockford Magnum still had many of the trappings of glamor that were associated with other detective series (ironically, Tom Selleck made several guest appearances on "The Rockford Files" playing the too good to be true Lance White). The other thing that I think made him endearing is the fact that he pretty much had a regular guy persona even though he was living in the lap of luxury and even though I wasn't as big a fan of this show as I was "Rockford" I can still see why this show was a classic.
And another thing, it wasn't just Selleck. This show could also be seen as an ensemble with Roger Moseley as T.C., Larry Manetti as Rick and, of course, John Hillerman as the stuffy Higgins all giving wonderful supporting performances.
