I love Garner as Jim Rockford in The Rockford files. Up until Hill Street Blues, I think it was the best-scripted show ever on television (one of whose producers went on to work on Hill Street Blues).

It seemed to me Garner could have been a leading man in films, but chose to work mostly in television, and definitely left his mark there.
A while ago, I saw talk of releasing the complete Rockford Files series on DVD, although I don't know if that's happened yet.